Consent




Date:  January 31, 2003




TO WHOM IT MAY CONCERN:


I hereby authorize Teradyne, Inc.'s Chief Financial Officer,
General Counsel, Corporate Counsel, Secretary, Assistant
Secretary or Corporate Controller, or any of their respective
designees to execute and cause to be filed, on my behalf, (i)
Form 144 or any other documents to be filed pursuant to Rule
144 of the Securities Act of 1933 and any regulations
thereunder with respect to securities of Teradyne, Inc. and
(ii) Form 4 and/or Form 5, including amendments thereto or other
document required to be filed pursuant to Section 16(a) of the
Securities and Exchange Act of 1934 and any regulations
thereunder with respect to securities of Teradyne, Inc.
This authorization shall continue until terminated in writing
by me.



Signature:/s/John M. Casey	Date Signed: January 31, 2003


Name Printed: John M. Casey