Washington, D.C. 20549

                                 SCHEDULE 13G/A

                   Under the Securities Exchange Act of 1934
                              (Amendment No. 1)*

                              inTEST Corporation
- ------------------------------------------------------------------------------
                               (Name of Issuer)

                         Common Stock, par value $0.01
- ------------------------------------------------------------------------------
                        (Title of Class of Securities)

                                  461147 10 0
- ------------------------------------------------------------------------------
                                 (CUSIP Number)

                                December 31, 1998
- ------------------------------------------------------------------------------
              (Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this
Schedule  is filed:

[ ]  Rule 13d-1(b)
[ ]  Rule 13d-1(c)
[X]  Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person?s
initial filing on this form with respect to the subject class of securities,
and for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be
deemed to be ?filed? for the purpose of Section 18 of the Securities Exchange
Act of 1934 (?Act?) or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).

Potential persons who are to respond to the collection of information
contained in this form are not required to respond unless the form displays a
current valid OMB control number.
OMB Number:  3235-0145
Expires:  August 31, 1999

                                                                 PAGE 1 OF 4

SCHEDULE 13G/A Amendment No. 1 - ------------------------------------------------------------------------------ CUSIP No. 461147 10 0 - ------------------------------------------------------------------------------ 1. Names of Reporting Person: I.R.S. Identification Nos. of above person (entities only): Richard O. Endres - ------------------------------------------------------------------------------ 2. Check the Appropriate Box if a Member of a Group (See Instructions) (a) (b) - ------------------------------------------------------------------------------ 3. SEC Use Only - ------------------------------------------------------------------------------ 4. Citizenship or Place of Organization U.S.A - -------------|----|----------------------------------------------------------- | 5. | Sole Voting Power | | 368,795 Number of |----|----------------------------------------------------------- Shares | 6. | Shared Voting Power Beneficially | | 500 Owned by |----|----------------------------------------------------------- Each | 7. | Sole Dispositive Power Reporting | | 368,795 Person With:|----|----------------------------------------------------------- | 8. | Shared Dispositive Power | | 500 - -------------|----|----------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 369,295 - ------------------------------------------------------------------------------ 10. Check if the Aggregate Amount in Row(9) Excludes Certain Shares (See Instructions) [ ] - ------------------------------------------------------------------------------ 11. Percent of Class Represented by Amount in Row (9) 5.7% - ------------------------------------------------------------------------------ 12. Type of Reporting Person (See Instructions) IN - ------------------------------------------------------------------------------ PAGE 2 OF 4

SCHEDULE 13G/A Amendment No. 1 This Amendment No. 1 amends the Schedule 13G dated February 10, 1998 (the "Original Schedule 13G") of Richard O. Endres filed with respect to the Common Stock, par value $0.01, of inTEST Corporation, a Delaware corporation, and is filed in accordance with 17 C.F.R. Sec. 240.13d-2(b) to report changes in the information reported in the Original Schedule 13G as of December 31, 1998. Except as disclosed herein, there has been no change in the information reported in the Original Schedule 13G. ITEM 4. OWNERSHIP See Items 5 through 9 and 11 of cover page. ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON Subject to the disclaimer of beneficial ownership set forth in Footnote 2, hereof, the reporting person hereby reports beneficial ownership of the following: Reporting Person No. Of Shares Percent ---------------- ------------- ------- Richard O. Endres 369,208 (1) 5.7% ------------ (1) Includes the following shares with respect to which another person or entity has the right to receive the dividends from or proceeds from the sale of such securities: 210,598 shares held in a trust for which Mr. Endres is trustee; and 500 shares owned of record by a corporation of which the reporting person is a director and shareholder. PAGE 3 OF 4

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. 7/13/99 /s/Richard O. Endres - ------------------- ------------------------------ Date Richard O. Endres Director PAGE 4 OF 4