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23. Consent of experts



                       CONSENT OF INDEPENDENT ACCOUNTANTS


We hereby consent to the incorporation by reference in the Registration
Statement on Form S-8 (No. 333-21999) of Keithley Instruments, Inc. of our
report dated June 15, 2001 relating to the financial statements of Keithley
Instruments, Inc. Retirement Savings Trust and Plan, which appears in this Form
11-K.




/s/PricewaterhouseCoopers LLP

June 28, 2001