UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

                                   -----------
                                   FORM 10-Q/A
                                (Amendment No. 1)
                                -----------------

     (Mark One)

     [X]     Quarterly report pursuant to Section 13 or 15(d) of  the Securities
     ---     Exchange Act of 1934

For the quarterly period ended September 30, 2003
                               ------------------

                                       OR

     [_]     Transition report pursuant to Section 13 or 15(d) of the Securities
             Exchange Act of 1934

For the transition period from                 to
                               ---------------    ---------------
Commission file number              0-13470
                        --------------------


                            NANOMETRICS INCORPORATED
             ------------------------------------------------------
             (Exact name of registrant as specified in its charter)


             California                                    94-2276314
    ------------------------------                     -------------------
   (State or other jurisdiction of                     (I. R. S. Employer
    incorporation or organization)                     Identification No.)


  1550 Buckeye Drive, Milpitas, CA                           95035
------------------------------------                   --------------------
(Address of principal executive offices)                   (Zip Code)


Registrant's telephone number, including area code   (408) 435-9600
                                                     --------------

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed  by  Section  13 or 15 (d) of the  Securities  Exchange  Act of 1934
during the preceding 12 months (or for such shorter  period that the  registrant
was  required  to file such  reports),  and (2) has been  subject to such filing
requirements for the past 90 days.

                           YES   X         NO
                               -----          -----

Indicate  by check mark  whether  the  registrant  is an  accelerated  filer (as
defined in Rule 12b-2 of the Act).

                           YES             NO   X
                               -----          -----

At November 4, 2003 there were 12,103,415  shares of common stock, no par value,
issued and outstanding.

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                            NANOMETRICS INCORPORATED

                                      INDEX


                                                                          Page
                                                                          ----

            Explanatory Note .............................................. 3

Item 4      Disclosure Controls and Procedures ............................ 3

Item 6      Exhibits and Reports on Form 8-K .............................. 3

Signatures ................................................................ 4

Exhibit  Index ............................................................ 5


                                       2


Explanatory Note

This  Amendment  on Form 10-Q/A  constitutes  Amendment  No. 1 to our  Quarterly
Report  on Form  10-Q  for the  period  ended  September  30,  2003,  which  was
previously  filed with the  Securities  and Exchange  Commission  (the "SEC") on
November 12, 2003 (the  "Quarterly  Report").  Item 6 of Part II of Form 10-Q is
being amended to list the exhibits  attached herto. Item 4 of Part II as well as
the Exhibits also are being updated.

ITEM 4.      Disclosure Controls and Procedures

        (a)  Evaluation of  Disclosure  Controls and  Procedures.  Our principal
executive  officer  and  principal  financial  officer,   after  evaluating  the
effectiveness  of our  disclosure  controls and  procedures (as defined in Rules
13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934 (the "Exchange
Act"))  as of the end of the  period  covered  by this  quarterly  report,  have
concluded  that our disclosure  controls and  procedures are effective  based on
their evaluation of the controls and procedures required by paragraph (b) of the
Exchange Act Rules 13a-15 or 15d-15.

        (b) Changes in Internal Controls over Financial Reporting. No changes in
our internal control over financial reporting  identified in connection with the
evaluation  required by  paragraph  (d) of Exchange  Act Rules  13a-15 or 15d-15
occurred  during our last fiscal  quarter that have  materially  affected or are
reasonably  likely to materially  affect,  our internal  control over  financial
reporting.


ITEM 6.      Exhibits and Reports on Form 8-K

A.     Exhibits.

Exhibit No.       Exhibit Title
-----------       -------------

31.1              Certification  of Chief Executive  Officer pursuant to Section
                  302 of the Sarbanes-Oxley Act of 2002.

31.2              Certification  of Chief Financial  Officer pursuant to Section
                  302 of the Sarbanes-Oxley Act of 2002.

32.1              Certification  of Chief Executive  Officer and Chief Financial
                  Officer pursuant to Section 906 of the  Sarbanes-Oxley  Act of
                  2002.

B.     Reports on Form 8-K.

       A current  report on Form 8-K  was furnished on October  23, 2003 with an
       attached press release.


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                            NANOMETRICS INCORPORATED

                                   SIGNATURES


         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.

NANOMETRICS INCORPORATED
(Registrant)



/s/    Paul B. Nolan
--------------------
Paul B. Nolan
Chief Financial Officer


Dated:  December 12, 2003


                                       4


                                  Exhibit Index



Exhibit No.       Exhibit Title
-----------       -------------

31.1              Certification  of Chief Executive  Officer pursuant to Section
                  302 of the Sarbanes-Oxley Act of 2002.

31.2              Certification  of Chief Financial  Officer pursuant to Section
                  302 of the Sarbanes-Oxley Act of 2002.

32.1              Certification  of Chief Executive  Officer and Chief Financial
                  Officer pursuant to Section 906 of the  Sarbanes-Oxley  Act of
                  2002.


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