SECURITIES AND EXCHANGE COMMISSION
Washington, D.C.  20549

SCHEDULE 13D
(Amendment No. 1)

Under the Securities Exchange Act of 1934

AMETEK, Inc.          
(Name of Issuer)

Common Stock Par Value $1.00 Per Share     
(Title of Class and Securities) 

031105109                  
(CUSIP Number of Class of Securities)

J. Hamilton Crawford Jr. , Gabelli Funds, Inc.,
One Corporate Center, Rye, NY 10580-1434 (914) 921-5067
(Name, Address and Telephone Number of Person Authorized
to Receive Notices and Communications)

August 12, 1994                      
(Date of Event Which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule
13G to report the acquisition which is the subject of this State-
ment because of Rule 13D-1(b)(3) or (4), check the following box: 
____     
/___/ 

Check the following box if a fee is being paid with this State-
ment:
_____
/ x  /

_________________________________________________________________

CUSIP No. 031105109                                       13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
Gabelli Funds, Inc.            I.D. No. 13-3056041
_________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
____
(a) /___/
____
(b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
WC 
_________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)          _____
/  x /
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
New York
_________________________________________________________________ 
: (7) SOLE VOTING POWER
:     670,500 (Item 5)
:________________________
: (8) SHARED VOTING POWER
NUMBER OF SHARES BENEFICIALLY          :     None  (Item 5) 
OWNED BY EACH REPORTING                :________________________
PERSON WITH                            : (9) SOLE DISPOSITIVE 
:     POWER
:     670,500 (Item 5)
:________________________
:(10) SHARED DISPOSITIVE 
:     POWER
:     None  (Item 5)  
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
670,500 (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
EXCLUDES CERTAIN SHARES*                         _____
/  x /
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
1.83%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
HC
_________________________________________________________________
*SEE INSTRUCTIONS BEFORE FILLING OUT! 
_____________________________________

CUSIP No. 031105109                                        13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
GAMCO Investors, Inc.              I.D. No. 13-2951242
_________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
____
(a) /___/
____
(b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
OO:  Funds of investment advisory clients
_________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)          _____
/  x /
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
New York
_________________________________________________________________ 
: (7) SOLE VOTING POWER
:     1,842,300 (Item 5)
:________________________
: (8) SHARED VOTING POWER
NUMBER OF SHARES BENEFICIALLY          :     None 
OWNED BY EACH REPORTING                :________________________ 
PERSON WITH                            : (9) SOLE DISPOSITIVE 
:     POWER
:     1,930,300 (Item 5)
:________________________ 
:(10) SHARED DISPOSITIVE 
:     POWER
:     None  
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,930,300 (Item 5)
_________________________________________________________________

(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
EXCLUDES CERTAIN SHARES*                         ____
/___/
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
5.27%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
IA
_________________________________________________________________
*SEE INSTRUCTIONS BEFORE FILLING OUT!   
_______________________________________

CUSIP No. 031105109                                        13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
Gabelli & Company, Inc.            I.D. No. 13-2885006
_________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
____
(a) /___/
____
(b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
OO: Funds of client discretionary accounts and working 
capital of its own account
_________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)          ____
/___/
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
New York
_________________________________________________________________ 
: (7) SOLE VOTING POWER
:     None (Item 5)
:________________________
: (8) SHARED VOTING POWER
NUMBER OF SHARES BENEFICIALLY          :     3,500 (Item 5)
OWNED BY EACH REPORTING                :________________________ 
PERSON WITH                            : (9) SOLE DISPOSITIVE 
:     POWER
:     None (Item 5)
:________________________ 
:(10) SHARED DISPOSITIVE 
:     POWER
:     3,500 (Item 5)
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
3,500 (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
EXCLUDES CERTAIN SHARES*                         ____
/___/
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
0.01%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
BD
_________________________________________________________________
*SEE INSTRUCTIONS BEFORE FILLING OUT! 
______________________________________

CUSIP No. 031105109                                        13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
Mario J. Gabelli                  I.D. No. 074-34-7503
_________________________________________________________________ 
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
____
(a) /___/
____
(b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
WC 
_________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)          ____
/ x /
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
USA 
_________________________________________________________________ 
: (7) SOLE VOTING POWER
:     None (Item 5)
:________________________
: (8) SHARED VOTING POWER
NUMBER OF SHARES BENEFICIALLY          :     None  
OWNED BY EACH REPORTING                :________________________ 
PERSON WITH                            : (9) SOLE DISPOSITIVE 
:     POWER
:     None (Item 5)
:________________________ 
:(10) SHARED DISPOSITIVE 
:     POWER
:     None  
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
None (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
EXCLUDES CERTAIN SHARES*                         _____
/  x /
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
0.00%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
IN
_________________________________________________________________

*SEE INSTRUCTIONS BEFORE FILLING OUT!
Item 1.   Security and Issuer
Item to Schedule 13D is amended, in pertinent part, as
follows:
This Amendment No. 1 to Schedule 13D on AMETEK, Inc.(the
"Issuer") is being filed on behalf of the undersigned to amend the
Schedule 13D, as amended (the "Schedule 13D")which was originally
filed on May 26, 1994.  Unless otherwise indicated, all capitalized
terms used herein but not defined herein shall have the same
meaning as set forth in the Schedule 13D.

Item 3.   Source and Amount of Funds or Other Consideration
All Reporting Persons used an aggregate of approximately
$5,166,434 to purchase its Securities.  GAMCO and GFI used approxi-
mately $3,387,059 and $1,779,375, respectively, of funds that were
provided through the accounts of certain of their investment
advisory clients (and, in the case of some of such accounts at
GAMCO, may be through borrowings from client margin accounts) in
order to purchase the Securities for such clients.  

Item 5.   Interest In Securities Of The Issuer
(a)  The aggregate number and percentage of Securities to
which this Schedule 13D relates is 2,604,300 shares, representing
7.11% of the 36,623,745 shares outstanding in the Issuer's most
recently filed Form 10-Q dated April 30, 1994.  The Reporting
Persons beneficially own those Securities as follows: 

Shares of           % of
Common              Class of
Name                          Stock               Common  

GFI:
As Principal                       0                0.00%
As Agent                     670,500                1.83%

GAMCO
As Principal                        0               0.00%
As Agent                   1,930,300                5.27%

Gabelli & Company:
Principal/Trading                  0                0.00%
Agent                          3,500                0.01%

Mario J. Gabelli                     0                0.00%

Mr. Gabelli is deemed to have beneficial ownership of the
Securities beneficially owned by each of the foregoing persons and
GFI is deemed to have beneficial ownership of the securities owned
beneficially by each of the foregoing persons other than Mr.
Gabelli. 
(b) Each of the Reporting Persons and Covered Persons has
the sole power to vote or direct the vote and sole power to dispose
or to direct the disposition of the Securities reported for it,
either for its own benefit or for the benefit of its investment
clients or its partners, as the case may be, except that GAMCO
Investors, Inc. does not have authority to vote 88,000 of the
reported shares and except that GFI has sole dispositive and voting
power with respect to the shares of the Issuer held by the The
Gabelli Asset Fund, The Gabelli Equity Trust, Inc., The Gabelli
Growth Fund, The Gabelli Convertible Securities Fund, The Gabelli
Value Fund Inc., The Gabelli Small Cap Growth Fund , The Gabelli
Equity Income Fund, ,The Gabelli ABC Fund, The Gabelli Global
Telecommunications Fund, Gabelli Gold Fund, Inc., The Gabelli
Global Convertible Securities Fund and/or The Gabelli Global
Interactive Couch Potato Fund, so long as the aggregate voting
interest of all joint filers does not exceed 25% of their total
voting interest in the Issuer and in that event, the Proxy Voting
Committee of each Fund (other than The Gabelli Growth Fund) shall
respectively vote that Funds shares, and except that, at any time,
the Proxy Voting Committee of each such Fund may take and exercise
in its sole discretion the entire voting power with respect to the
shares held by such Fund under special circumstances such as
regulatory considerations, and except that Gabelli & Company shares
with the clients for whose accounts such Securities were purchased
the voting and dispositive power with respect to 3,500 shares
purchased for such accounts, and except that the power of Mr.
Gabelli and GFI is indirect with respect to Securities beneficially
owned directly by other Reporting Persons. 

Signature      
After reasonable inquiry and to the best of my knowledge and
belief, I certify that the information set forth in this statement
is true, complete and correct. 
Dated:    August 15, 1994
MARIO J. GABELLI

By:_____________________________
J. Hamilton Crawford, Jr.   
Attorney-in-Fact             

GABELLI FUNDS, INC. 

By:_________________________
J. Hamilton Crawford, Jr.
Senior Vice President, and       
General Counsel    

GAMCO INVESTORS, INC.  

By:_________________________
J. Hamilton Crawford, Jr.  
Assistant Secretary

GABELLI & COMPANY, INC.

By:_________________________
J. Hamilton Crawford, Jr.
Senior Vice President
and General Counsel 

Schedule I

Information with Respect to Executive
Officers and Directors of the Undersigned 

Schedule I to Schedule 13D is amended, in pertinent part, as
follows:

The following sets forth as to each of the executive offi-
cers and directors of the undersigned: his name; his business address;
and his present principal occupation or employment and the name,
principal business and address of any corporation or other organiza-
tion in which such employment is conducted.  Unless otherwise speci-
fied, the principal employer of each such individual is Gabelli Funds,
Inc., Gabelli & Company, Inc., or GAMCO Investors, Inc., the business
address of each of which is One Corporate Center, Rye, New York 10580,
and each such individual identified below is a citizen of the United
States.  To the knowledge of the undersigned, during the last five
years, no such person has been convicted in a criminal proceeding
(excluding traffic violations or similar misdemeanors), and no such
person was a party to a civil proceeding of a judicial or administra-
tive body of competent jurisdiction as a result of which he was or is
subject to a judgment, decree or final order enjoining future viola-
tions of, or prohibiting or mandating activities subject to, federal
or state securities law or finding any violation with respect to such
laws except as reported in Item 2(d) of this Schedule 13D. 

Gabelli Funds, Inc. 

Directors: 

Mario J. Gabelli

Richard B. Black              Chairman of Raster Image
Processing Systems; Chairman
ECRM; Director of Archetype
and Oak Technology; Director
of The Morgan Group, Inc.;
General Partner of KBA Part-  
ners, Parker Plaza
400 Kelby Street,
Fort Lee, NJ 07029

Charles C. Baum               Chairman, Director and Chief
Executive Officer of The
Morgan Group, Inc.;
Secretary & Treasurer
United Holdings              
2545 Wilkens Avenue
Baltimore, MD  21223

Dr. Eamon M. Kelly            President
Tulane University
218 Gibson Hall
6823 St. Charles Avenue
New Orleans, LA  70118

Officers:

Mario J. Gabelli              Chairman, Chief Executive
Officer and Chief Investment
Officer

J. Hamilton Crawford, Jr.     Vice President and Assistant 
Secretary  

Stephen G. Bondi              Vice President - Finance

Joseph J. Frazzitta           Assistant Secretary

GAMCO Investors, Inc.

Directors:
Douglas R. Jamieson
Joseph R. Rindler, Jr.
Regina Pitaro
Joseph J. Frazzitta
William F. Scholz

Officers:

Mario J. Gabelli              Chief Investment Officer

Douglas R. Jamieson           Chief Operating Officer and
Executive Vice President 

Joseph J. Frazzitta           Vice President and Chief
Financial Officer

James E. McKee                Vice President, Legal and
Compliance and Assistant
Secretary

J. Hamilton Crawford, Jr.     Assistant Secretary    

Gabelli Securities, Inc.

Directors:

Charles C. Baum               See above-Gabelli Funds, Inc.

Joseph R. Rindler             Managing Director
Gabelli & Company, Inc.
One Corporate Center
Rye, NY  10580

David Perlmutter              Perlmutter & Associates
200 Park Avenue, Suite 4515
New York, N.Y.  10166

Stephen G. Bondi              Acting Chief Operating Officer
and Vice President

Advisors:

Vincent J. Amabile
Robert Blake

Officers:

Stephen G. Bondi              Acting Chief Operating Officer
and Vice President

J. Hamilton Crawford, Jr.     Vice President                
and Assistant Secretary  

Erwin I. Mevorah              Vice President - Finance 

Gabelli & Company, Inc.

Directors:

James G. Webster, III         Chairman 

Charles C. Baum               See above-Gabelli Funds, Inc.

Joseph J. Frazzitta           Vice President and
Chief Financial Officer

Officers:

James G. Webster, III         Chairman 

Joseph J. Frazzitta           Vice President/Finance and
Chief Financial Officer

Stephen G. Bondi              Vice President 

J. Hamilton Crawford, Jr.     Vice President  
and Assistant Secretary   

GLI, Inc.

Directors:

Mario J. Gabelli              See above-Gabelli Funds, Inc.

Officers:

Mario J. Gabelli              Chairman and Chief Investment
Officer

Stephen G. Bondi              Vice President

J. Hamilton Crawford, Jr.     Assistant Secretary  

Gabelli Associates Limited

Directors:

Mario J. Gabelli              See above-Gabelli Funds, Inc.

MeesPierson  (Cayman)         British American Centre   
Limited                       Dr. Roy's Drive- Phase 3
Georgetown, Grand Cayman   
Cayman Islands, British West Indies

MeesPierson  (Cayman)         British American Centre   
Limited                       Dr. Roy's Drive- Phase 3
Georgetown, Grand Cayman   
Cayman Islands, British West Indies

Officers:

Mario J. Gabelli              Chief Investment Officer

Kevin Bromley                 Vice President, Treasurer and
Assistant Secretary

Sandra Wight                  Secretary and Assistant Treasurer

Gabelli International Limited

Directors:

Mario J. Gabelli              See above-Gabelli Funds, Inc.

MeesPierson  (Cayman)         British American Centre   
Limited                       Dr. Roy's Drive- Phase 3
Georgetown, Grand Cayman   
Cayman Islands, British West Indies

Officers:

Kevin Bromley                 Vice President, Treasurer, and      
Assistant Secretary                 
MeesPierson (Cayman) Limited
British American Centre  
Dr. Roy's Drive- Phase 3   
Georgetown, Grand Cayman    
Cayman Islands, British West Indies

Sandra Wight                  Secretary and Assistant Treasurer
Assistant Secretary                 
MeesPierson (Cayman) Limited
British American Centre  
Dr. Roy's Drive- Phase 3   
Georgetown, Grand Cayman    
Cayman Islands, British West Indies

Lynch Corporation
8 Sound Shore Drive
Greenwich, CT  06830

Directors:

Paul J. Evanson               Chief Financial Officer 
FPL Group, Inc.
P.O Box 14000
700 Universe Blvd.
Juno Beach, Fl 33408

Bradley J. Bell               Vice President & Treasurer
Whirlpool Corp.
Administrative Center
Benton Harbor, MI  49022

Morris Berkowitz              Business Consultant
163-43 Willets Point Blvd.
Whitestone, NY 11357

Richard J. Boyle              Chairman, The Boyle Group
6110 Blue Circle Drive  
Suite 250 
Minnetonka, MN 55343

Mario J. Gabelli              See above-Gabelli Funds, Inc.

Robert C. Kolodny, M.D.       Medical Director and Chairman
of the Board of The Behavorial
Medicine Institute
885 Oenoke Ridge Road
New Canaan, CT  06840

Paul Woolard                  Business Consultant
116 East 68th Street
New York, NY 10021

E. Val Cerutti                Business Consultant          
Cerutti Consultants 
227 McLain Street
Mount Kisco, NY   10549

Officers:

Mario J. Gabelli              Chairman and Chief Executive   
Officer

Philip J. Lombardo            Office of the President

Michael J. Small              Office of the President

Joseph H. Epel                Treasurer

Robert E. Dolan               Chief Financial Officer 

Carmine Ceraolo               Assistant Controller

Robert A. Hurwich             Vice President-Administration,
Secretary and General Counsel

Mary J. Carroll               Administrative Assistant 

Safety Railway Service Corporation
251 Welton Street
Hamden, CT 06517

Directors:

Joseph P. Rhein               Chairman                
241 McClenaghan Mill Road
Wynnewood, PA 19096

William F. Bullis             Safety Railway Service Corporation
265 Great Neck Road
Great Neck, NY 11021

Officers:

Robert E. Dolan               Controller

Joseph H. Epel                Treasurer and Assistant
Secretary

James W. Toman                Assistant Secretary 

Entoleter, Inc.
251 Welton Street
Hamden, CT  06517

Directors:

Joseph P. Rhein               See above-Safety Railway

William F. Bullis             See above-Safety Railway

Officers:

John M. Martin                President

James W. Toman                Chief Financial Officer

Joseph H. Epel                Treasurer and Secretary

Robert E. Dolan               Controller

Western New Mexico Telephone Company
314 Yankee Street
Silver City, NM  08062

Directors:

Jack C. Keen                  Chairman

Jack W. Keen                  President

Dr. Brian E. Gordon           Vice President

Mary Beth Baxter              Secretary & Treasurer

Robert E. Dolan               See above-Lynch Corporation

Joseph H. Epel                See above-Lynch Corporation

Carmine Ceraolo               See above-Lynch Corporation

Mary J. Carroll               See above-Lynch Corporation

Officers:

Jack C. Keen                  Chairman of the Board

Jack W. Keen                  President

Jack L. Bentley               Executive Vice President

Dr. Brian E. Gordon           Vice President

Charles M. Baxter             Sr. Vice President-Operations

James M. Bucher               Asst. Vice President-         
Operations 

Mary Beth Baxter              Secretary & Treasurer

Joseph H. Epel                Assistant Treasurer

Inter-Community Telephone Company
P.O. Box A
Nome, ND  58062

Directors:

Mary J. Carroll               See above-Lynch Corporation

Carmine P. Ceraolo            See above-Lynch Corporation

Robert E. Dolan               See above-Lynch Corporation

Joseph H. Epel                See above-Lynch Corporation

Leone A. Nilsen               President

Roger J. Nilsen               P.O. Box 146
Hannaford, ND 58448

Duane A. Plecity              Secretary

Harry B. Snyder               P.O. Box 131
Buffalo, ND  58011

Robert Snyder                 200 Broadway South
Buffalo, ND 58011
Officers:

Leone A. Nilsen               President

Robert Snyder                 Vice President 

Duane A. Plecity              Secretary

Harry B. Snyder               Treasurer

Joseph H. Epel                Assistant Treasurer

SCHEDULE II
INFORMATION WITH RESPECT TO
TRANSACTIONS EFFECTED DURING THE PAST SIXTY DAYS OR
SINCE THE MOST RECENT FILING ON SCHEDULE 13D (1)
SHARES PURCHASED        AVERAGE
DATE            SOLD(-)             PRICE(2)
COMMON STOCK-AMETEK INC
THE GABELLI PERFORMANCE PARTNERSHIP
8/01/94            1,000-           16.0750
GABELLI FUNDS, INC.
THE GABELLI ABC FUND
7/20/94            5,000-           16.1250
GAMCO INVESTORS, INC.
8/12/94            7,000            15.0000
8/11/94            2,500            15.3250
8/10/94            1,500            15.5000
8/05/94            1,700            15.6250
7/29/94            1,000            16.2500
7/26/94            3,400            15.9669
7/25/94            1,500            16.0000
7/20/94            2,000-           16.1250
6/17/94              500            15.0000
6/16/94            1,000-           14.8750
6/13/94            5,000            13.8625
6/13/94            2,000            14.0000
6/13/94           11,100            14.0060
6/13/94            1,000-             *DO
(1) UNLESS OTHERWISE INDICATED, ALL TRANSACTIONS WERE EFFECTED
ON THE NY STOCK EXCHANGE.
(2) PRICE EXCLUDES COMMISSION.
(*) RESULTS IN CHANGE OF DISPOSITIVE POWER AND BENEFICIAL OWNERSHIP
OF GAMCO INVESTORS, INC.