UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                   -------------------------------------------

                                    FORM 8-K
                                 CURRENT REPORT
                       Pursuant to Section 13 or 15(d) of
                       the Securities Exchange Act of 1934


                                 Date of Report
                             (Date of earliest event
                                   reported):

                                 April 27, 2005
                    ----------------------------------------

                           THERMO ELECTRON CORPORATION
             (Exact name of Registrant as specified in its Charter)



                                                                                            

Delaware                                                1-8002                                                     04-2209186
(State or other jurisdiction of                 (Commission File Number)                      (I.R.S. Employer Identification
incorporation or organization)                                                                                        Number)


                         81 Wyman Street, P.O. Box 9046
                            Waltham, Massachusetts                                                                 02454-9046
                     (Address of principal executive offices)                                                      (Zip Code)

                                 (781) 622-1000
              (Registrant's telephone number including area code)


 


         This Current Report on Form 8-K contains forward-looking statements
that involve a number of risks and uncertainties. Important factors that could
cause actual results to differ materially from those indicated by such
forward-looking statements are set forth under the heading "Forward Looking
Statements" in the Registrant's Annual Report on Form 10-K for the fiscal year
ended December 31, 2004. These include risks and uncertainties relating to the
need to develop new products and adapt to significant technological change,
dependence on customers that operate in cyclical industries, general worldwide
economic conditions and related uncertainties, the effect of changes in
governmental regulations, dependence on customers' capital spending policies and
government funding policies, use and protection of intellectual property,
exposure to product liability claims in excess of insurance coverage, retention
of contingent liabilities from businesses we sold, realization of potential
future savings from new productivity initiatives, implementation of our branding
strategy, implementation of strategies for improving internal growth, the effect
of exchange rate fluctuations on international operations, identification,
completion and integration of new acquisitions and potential impairment of
goodwill from previous acquisitions. While we may elect to update
forward-looking statements at some point in the future, we specifically disclaim
any obligation to do so, even if our estimates change and, therefore, you should
not rely on these forward-looking statements as representing our views as of any
date subsequent to today.

Item 2.02 Results of Operations and Financial Condition.

         On April 27, 2005, the Registrant announced its financial results for
the fiscal quarter ended April 2, 2005. The full text of the press release
issued in connection with the announcement is attached as Exhibit 99.1 to this
Form 8-K and incorporated herein by reference.

         The information contained in this Form 8-K (including Exhibit 99.1)
shall not be deemed "filed" for purposes of Section 18 of the Securities
Exchange Act of 1934 (the "Exchange Act") or otherwise subject to the
liabilities of that section, nor shall it be deemed incorporated by reference in
any filing under the Securities Act of 1933 or the Exchange Act, except as
expressly set forth by specific reference in such a filing.


Item 9.01.  Financial Statements and Exhibits.

(c)      Exhibits

The following Exhibit relating to Item 2.02 shall be deemed "furnished", and not
"filed":

         99.1     Press Release dated April 27, 2005.








                                    SIGNATURE

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized, on this 27th day of April, 2005.


                                          THERMO ELECTRON CORPORATION


                                          By:   /s/ Peter E. Hornstra
                                          --------------------------------------
                                                Peter E. Hornstra
                                                Corporate Controller and Chief 
                                                Accounting Officer




                                                                    Exhibit 99.1

[THERMO LOGO] 
                                                                            NEWS
                           

FOR IMMEDIATE RELEASE
Media Contact Information:                      Investor Contact Information:
Lori Gorski                                     J. Timothy Corcoran
Phone:    781-622-1242                          Phone:  781-622-1111
E-mail:   lori.gorski@thermo.com                E-mail: tim.corcoran@thermo.com
          ----------------------                        -----------------------
Website:  www.thermo.com


            Thermo Electron Reports 15% Growth in Earnings per Share
             in First Quarter 2005 and Raises Guidance for Full Year



WALTHAM,  Mass., April 27, 2005 - Thermo Electron  Corporation  (NYSE:TMO) today
reported  revenues of $559  million for the first  quarter of 2005,  a 7 percent
increase from $525 million in 2004. The revenue increase results from the effect
of acquisitions  (5%) and currency  translation  (2%). GAAP diluted earnings per
share (EPS) grew 15 percent in the 2005 quarter to $.30,  compared  with $.26 in
the year-ago  period.  GAAP  operating  income rose 13 percent in 2005, and GAAP
operating margin increased to 10.7 percent from 10.1 percent in 2004.

Adjusted  EPS  also  grew 15  percent,  to $.31 in the  first  quarter  of 2005,
compared with $.27 in the 2004 quarter.  Adjusted  operating  income increased 7
percent to record first  quarter  levels since the company's  reorganization  in
2000. Adjusted operating margin was 11.9 percent in both periods.

Adjusted  EPS,  adjusted  operating  income and  adjusted  operating  margin are
non-GAAP  measures that exclude  certain items detailed at the end of this press
release under the heading, "Use of Non-GAAP Financial Measures."

First Quarter Highlights

     o    EPS grew 15 percent
     o    More than 20 new products introduced at Pittcon
     o    Signed agreement to acquire Kendro Laboratory Products
     o    Acquired Niton, a provider of portable industrial X-ray analyzers,  at
          quarter end
     o    Acquired R&P, a supplier of air-quality monitoring instruments,  after
          quarter end

"We are pleased to report another quarter of solid bottom-line growth, with a 15
percent increase in EPS," said Marijn E. Dekkers,  president and chief executive
officer of Thermo Electron.  "We are  consistently  growing earnings despite the
weaker conditions we've recently faced in some of our end markets,  most notably
pharmaceutical, offset by strength in industrial segments.



"To drive top-line  growth,  we continue to expand our portfolio of products and
services,  with a focus on creating integrated  instrument  solutions that allow
our  customers  to make  their  processes  more  efficient.  Our new  LeadStream
Solution(TM)  featured  at  Pittcon,  for  example,  is a  suite  of  integrated
instruments,  robotics  and  software  that  eases  a major  bottleneck  in drug
discovery by improving  the speed and  accuracy of ADME/Tox  screening.  Our own
innovations are enhanced by strategic  acquisitions  such as Kendro,  which will
greatly extend our laboratory offerings after its expected closing in the second
quarter.  The  recent  additions  of Niton and R&P  (Rupprecht  and  Patashnick)
further strengthen our position in industrial and environmental markets as well.

"We expect our positive  earnings  momentum to continue in the second quarter of
2005,  resulting  in adjusted  EPS guidance of $.32 to $.34 - a 10 to 17 percent
increase  over $.29 in the 2004  quarter.  For the full year, we are raising our
previous estimate of $1.40 to $1.45 to our new guidance of $1.42 to $1.47, which
is 14 to 18 percent  higher than last year's  $1.25."  (This  guidance  excludes
approximately   $.04  of  expense  per   quarter   from  the   amortization   of
acquisition-related intangible assets; it also excludes results from the pending
Kendro acquisition and the other items described in this press release under the
heading, "Use of Non-GAAP Financial Measures.")

Life and Laboratory Sciences

The Life and Laboratory  Sciences segment reported an 8 percent revenue increase
in the first  quarter of 2005 to $393  million,  versus $365 million in the 2004
quarter.  GAAP  operating  income  for the  segment  grew 11 percent in the 2005
quarter, with GAAP operating margin increasing to 13.2 percent from 12.8 percent
a year ago.  Adjusted  operating  income increased 6 percent in the 2005 period,
and adjusted  operating  margin was 14.4 percent,  compared with 14.7 percent in
2004.

Measurement and Control

First quarter  revenues in the Measurement and Control segment grew 4 percent to
$166  million in the first  quarter of 2005,  compared  with $160 million a year
ago.  GAAP  operating  income for the segment  increased  29 percent in the 2005
quarter,  and GAAP  operating  margin rose to 11.1 percent from 8.9 percent last
year. Adjusted operating income grew 25 percent in the 2005 period, and adjusted
operating margin increased to 12.2 percent, versus 10.1 percent in 2004.

Use of Non-GAAP Financial Measures

In addition to the  financial  measures  prepared in accordance  with  generally
accepted  accounting  principles  (GAAP),  we  use  certain  non-GAAP  financial
measures,  including  adjusted  EPS,  adjusted  operating  income  and  adjusted
operating  margin,  which  exclude  restructuring  and  other  costs/income  and
amortization of acquisition-related intangible assets. Adjusted EPS and adjusted
operating   income  also   exclude   certain   other   gains  and  losses,   tax
provisions/benefits  related to the  previous  items,  benefits  from tax credit
carryforwards  and the impact of the  resolution of significant  tax audits.  In
addition, our adjusted EPS guidance excludes results of pending acquisitions and
the impact of  accounting  principles  not yet adopted.  We exclude  these 




items  because  they are  outside of our normal  operations  and/or,  in certain
cases, are difficult to forecast  accurately for future periods. We believe that
the inclusion of such measures helps investors to gain a better understanding of
our core operating results and future prospects,  consistent with how management
measures and forecasts the company's performance, especially when comparing such
results to previous periods or forecasts.

Specifically:

We exclude costs and tax effects associated with restructuring activities,  such
as reducing overhead and consolidating  facilities, in connection with the final
phase of our overall  reorganization,  which we substantially completed in 2004.
We believe  that the costs  related to these  restructuring  activities  are not
indicative of our normal operating costs.

We exclude charges  relating to the sale of inventories  revalued at the date of
acquisition,  as we  believe  these  charges  are not  indicative  of our normal
operating costs.

We exclude  the  expense and tax effects  associated  with the  amortization  of
acquisition-related  intangible  assets  because a  significant  portion  of the
purchase price for acquisitions may be allocated to intangible  assets that have
lives of 5 to 10 years. Exclusion of the amortization expense allows comparisons
of operating  results that are consistent  over time for both our newly acquired
and long-held  businesses and with both  acquisitive  and  non-acquisitive  peer
companies.

We also exclude certain gains/losses and related tax effects,  benefits from tax
credit carryforwards and the impact of the resolution of significant tax audits,
which are  either  isolated  or  cannot  be  expected  to occur  again  with any
regularity  or  predictability  and that we believe  are not  indicative  of our
normal operating gains and losses. We exclude  gains/losses from the sale of our
equity  interests in Newport  Corporation and Thoratec  Corporation,  as well as
other  items  such  as the  sale of a  business  or real  estate  and the  early
retirement of debt.

Thermo's management uses these non-GAAP measures,  in addition to GAAP financial
measures,  as the basis for measuring the company's core  operating  performance
and comparing such  performance to that of prior periods and to the  performance
of our competitors. Such measures are also used by management in their financial
and operating decision-making and for compensation purposes.

The non-GAAP  financial  measures of Thermo's results of operations  included in
this press  release are not meant to be  considered  superior to or a substitute
for  Thermo's   results  of  operations   prepared  in  accordance   with  GAAP.
Reconciliations  of  such  non-GAAP  financial  measures  to the  most  directly
comparable  GAAP financial  measures are set forth in the  accompanying  tables.
Thermo's earnings guidance,  however,  is only provided on an adjusted basis. It
is not feasible to provide GAAP EPS guidance  because the items excluded,  other
than the  amortization  expense,  are  difficult to predict and estimate and are
primarily  dependent on future  events,  such as the timing of completion of and
results from pending  acquisitions,  the impact of accounting principles not yet
adopted, decisions concerning the location and timing of facility consolidations
and the timing of and proceeds from the sale of our equity  interests in Newport
and Thoratec. We no longer own any shares of FLIR Systems.



Conference Call

Thermo Electron will hold its earnings  conference call today, April 27, at 9:00
a.m. Eastern time. To listen, dial 888-872-9028 within the U.S., or 973-633-6740
outside  the U.S.  You may also  listen to the call live on the Web by  visiting
http://www.thermo.com.  Click on  "About  Thermo,"  then  "Investors."  An audio
archive  of the call will be  available  in that  section  of our Web site until
Friday,  May 27,  2005.  You will also find this press  release,  including  the
accompanying  reconciliation of non-GAAP financial  measures,  under the heading
"Press Releases," and related information under the heading "Financial Reports,"
in the Investors section of our Web site.

About Thermo Electron

Thermo Electron Corporation is the world leader in analytical  instruments.  Our
instrument solutions enable our customers to make the world a healthier, cleaner
and  safer  place.  Thermo's  Life  and  Laboratory  Sciences  segment  provides
analytical  instruments,  scientific equipment,  services and software solutions
for  life  science,  drug  discovery,  clinical,  environmental  and  industrial
laboratories. Thermo's Measurement and Control segment is dedicated to providing
analytical  instruments  used  in  a  variety  of  manufacturing  processes  and
in-the-field  applications,  including those associated with safety and homeland
security. Based near Boston, Massachusetts,  Thermo has revenues of more than $2
billion,  and employs  approximately  10,000  people in 30  countries.  For more
information, visit http://www.thermo.com.


The following constitutes a "Safe Harbor" statement under the Private Securities
Litigation  Reform Act of 1995:  This  press  release  contains  forward-looking
statements that involve a number of risks and  uncertainties.  Important factors
that could cause actual  results to differ  materially  from those  indicated by
such forward-looking statements are set forth under the heading "Forward-Looking
Statements"  in the  company's  Annual  Report on Form 10-K for the fiscal  year
ended December 31, 2004. These include risks and uncertainties  relating to: the
need to develop new  products  and adapt to  significant  technological  change,
dependence on customers that operate in cyclical  industries,  general worldwide
economic  conditions  and  related  uncertainties,  the  effect  of  changes  in
governmental regulations, dependence on customers' capital spending policies and
government  funding  policies,  use and  protection  of  intellectual  property,
exposure to product liability claims in excess of insurance coverage,  retention
of contingent  liabilities  from  businesses we sold,  realization  of potential
future savings from new productivity initiatives, implementation of our branding
strategy, implementation of strategies for improving internal growth, the effect
of exchange  rate  fluctuations  on  international  operations,  identification,
completion  and  integration  of new  acquisitions  and potential  impairment of
goodwill  from  previous  acquisitions.  We undertake no  obligation to publicly
update any  forward-looking  statement,  whether as a result of new information,
future events or otherwise.



                                       ###







                                                                                                           
Consolidated Statement of Income (unaudited)
                                                                                     Three Months Ended
                                                               ---------------------------------------------------------------
                                                             
                                                                        April 2, 2005                    April 3, 2004
                                                               ------------------------------   ------------------------------
(In thousands except per share amounts)                          Reported (a)    Adjusted (b)     Reported (a)     Adjusted (b)
------------------------------------------------------------------------------------------------------------------------------
Revenues                                                           $ 559,208       $ 559,208        $ 525,032       $ 525,032
                                                               --------------   -------------   --------------   -------------
Costs and Operating Expenses:
   Cost of revenues (c)                                              299,974         299,974          284,172         281,764
   Selling, general and administrative expenses                      156,087         156,087          146,753         146,753
   Amortization of acquisition-related intangible assets               7,414             -              3,806             -
   Research and development expenses                                  36,328          36,328           34,269          34,269
   Restructuring and other costs (income), net (d)                      (271)            -              3,158             -
                                                               --------------   -------------   --------------   -------------
                                                                     499,532         492,389          472,158         462,786
                                                               --------------   -------------   --------------   -------------
Operating Income                                                      59,676          66,819           52,874          62,246
Interest Income                                                        3,336           3,336            1,920           1,920
Interest Expense                                                      (3,155)         (3,155)          (2,729)         (2,729)
Other Income, Net (e)                                                  3,123           3,123            3,411           1,790
                                                               --------------   -------------   --------------   -------------

Income from Continuing Operations Before Income Taxes                 62,980          70,123           55,476          63,227
Provision for Income Taxes (f)                                       (17,397)        (19,651)         (15,811)        (18,064)
                                                               --------------   -------------   --------------   -------------
 
Income from Continuing Operations                                     45,583          50,472           39,665          45,163
Income from Discontinued Operations (net of income tax
  provision of $1,147 in 2004)                                           -               -              3,457             -
Gain on Disposal of Discontinued Operations (net of income tax
  provision of $2,238 in 2005)                                         3,273             -                -               -
                                                               --------------   -------------   --------------   -------------

Net Income                                                         $  48,856       $  50,472        $  43,122       $  45,163
                                                               ==============   =============   ==============   =============

Earnings per Share from Continuing Operations:
    Basic                                                          $     .28                        $     .24
                                                               ==============                   ==============
    Diluted                                                        $     .28                        $     .24
                                                               ==============                   ==============

Earnings per Share:
    Basic                                                          $     .30                        $     .26
                                                               ==============                   ==============
    Diluted                                                        $     .30       $     .31        $     .26       $     .27
                                                               ==============   =============   ==============   =============

Weighted Average Shares:
    Basic                                                            160,957                          165,206
                                                               ==============                   ==============
    Diluted                                                          164,730         164,730          169,996         169,996
                                                               ==============   =============   ==============   =============



(a)  Reported results were determined in accordance with U.S. generally accepted
     accounting  principles  (GAAP).  Prior period amounts have been adjusted to
     reflect the treatment of Spectra-Physics as a discontinued operation.
(b)  Adjusted  results are  non-GAAP  measures  and  exclude  charges to cost of
     revenues (note c), amortization of  acquisition-related  intangible assets,
     restructuring and other costs/income (note d), certain other income/expense
     (note e),  the tax  consequences  of these  items  (note f) and  results of
     discontinued operations.
(c)  Reported  results in 2004 include  $2,408,000 of charges  primarily for the
     sale of inventories revalued at the date of acquisition.
(d)  Reported results in 2005 include  restructuring  and other items consisting
     principally  of severance,  abandoned  facility and other  expenses of real
     estate  consolidation  and net  gains  on the sale of  buildings.  Reported
     results  in  2004  include   restructuring   and  other  items   consisting
     principally  of severance,  abandoned  facility and other  expenses of real
     estate  consolidation,  gain on the sale of a business  and  legal/advisory
     fees associated with a reorganization of the company's non-U.S.  subsidiary
     structure.
(e)  Reported  results  include  $1,621,000  of gains from the sale of shares of
     Thoratec Corporation in 2004.
(f)  Adjusted  provision for income taxes excludes  $2,254,000 and $2,253,000 of
     incremental  tax benefit in 2005 and 2004,  respectively,  for the items in
     (b) through (e).





                                                                                                                    
Segment Data (g)(h)(i)(l)                                                                             Three Months Ended
                                                                                                ------------------------------
(In thousands except percentage amounts)                                                         April 2, 2005     April 3, 2004
------------------------------------------------------------------------------------------------------------------------------

Life and Laboratory Sciences
  Revenues                                                                                          $ 393,305       $ 365,466
                                                                                                --------------   -------------
  GAAP Operating Income                                                                                51,830          46,817
  Cost of Revenue Charges (j)                                                                             -             2,346
  Restructuring and Other Items (k)                                                                    (1,734)          1,421
  Amortization of Acquisition-related Intangible Assets                                                 6,614           3,143
                                                                                                --------------   -------------
   Adjusted Operating Income                                                                        $   56,710      $   53,727
                                                                                                --------------   -------------
   GAAP Operating Margin                                                                                 13.2%           12.8%
   Adjusted Operating Margin                                                                             14.4%           14.7%


Measurement and Control
  Revenues                                                                                          $ 165,903       $ 159,566
                                                                                                --------------   -------------
 
  GAAP Operating Income                                                                                18,360          14,183
  Cost of Revenue Charges (j)                                                                             -                62
  Restructuring and Other Items (k)                                                                     1,034           1,222
  Amortization of Acquisition-related Intangible Assets                                                   799             662
                                                                                                --------------   -------------
  Adjusted Operating Income                                                                         $  20,193       $  16,129
                                                                                                --------------   -------------

  GAAP Operating Margin                                                                                 11.1%            8.9%
  Adjusted Operating Margin                                                                             12.2%           10.1%


Consolidated (including Corporate Costs)
  Revenues                                                                                          $ 559,208       $ 525,032
                                                                                                --------------   -------------

  GAAP Operating Income                                                                                59,676          52,874
  Cost of Revenue Charges (j)                                                                             -             2,408
  Restructuring and Other Items (k)                                                                      (271)          3,158
  Amortization of Acquisition-related Intangible Assets                                                 7,414           3,806
                                                                                                --------------   -------------
  Adjusted Operating Income                                                                         $  66,819       $  62,246
                                                                                                --------------   -------------

  GAAP Operating Margin                                                                                 10.7%           10.1%
  Adjusted Operating Margin                                                                             11.9%           11.9%



(g)  GAAP  operating  income  and  GAAP  operating  margin  were  determined  in
     accordance with U.S. generally accepted accounting principles.
(h)  Adjusted  operating  income and  adjusted  operating  margin  are  non-GAAP
     measures  and  exclude the items in notes (c) and (d) and  amortization  of
     acquisition-related intangible assets.
(i)  Depreciation  expense  in  2005  was  $6,779,000  at  Life  and  Laboratory
     Sciences,   $2,416,000   at   Measurement   and  Control  and   $10,152,000
     Consolidated.  Depreciation  expense  in 2004  was  $7,535,000  at Life and
     Laboratory Sciences,  $2,457,000 at Measurement and Control and $10,878,000
     Consolidated.
(j)  Includes items described in note (c).
(k)  Includes items described in note (d).
(l) Book-to-bill ratio was 1.01 in the first quarter of 2005.





                                                                                                     
Condensed Consolidated Balance Sheet (unaudited)


(In thousands)                                                             April 2, 2005    Dec. 31, 2004
------------------------------------------------------------------------------------------------------------

Current Assets:
  Cash and cash equivalents                                                 $   351,560     $   326,886
  Short-term available-for-sale investments                                     177,043         185,369
  Accounts receivable, net                                                      458,558         469,553
  Inventories                                                                   345,605         336,711
  Other current assets                                                          152,852         151,135
                                                                          --------------  --------------
                                                                              1,485,618       1,469,654
                                                                          --------------  --------------
Property, Plant and Equipment, Net                                              238,030         261,041
                                                                          --------------  --------------
Acquisition-related Intangible Assets                                           166,305         158,577
                                                                          --------------  --------------
Other Assets                                                                    159,171         174,428
                                                                          --------------  --------------
Goodwill                                                                      1,505,339       1,513,025
                                                                          --------------  --------------
                                                                            $ 3,554,463     $ 3,576,725
                                                                          ==============  ==============


Current Liabilities:
  Short-term obligations and current maturities of long-term obligations    $    15,500     $    15,017
  Other current liabilities                                                     491,846         521,159
  Current liabilities of discontinued operations                                 41,173          42,552
                                                                          --------------  --------------
                                                                                548,519         578,728
                                                                          --------------  --------------
Long-term Deferred Income Taxes and Other Long-term Liabilities                 105,524         106,377
                                                                          --------------  --------------
Long-term Obligations:
  Senior notes                                                                  133,681         135,232
  Subordinated convertible obligations                                           77,234          77,234
  Other                                                                          12,812          13,604
                                                                          --------------  --------------
                                                                                223,727         226,070
                                                                          --------------  --------------
Total Shareholders' Equity                                                    2,676,693       2,665,550
                                                                          --------------  --------------
                                                                            $ 3,554,463     $ 3,576,725
                                                                          ==============  ==============