Attached files

file filename
10-K - FORM 10-K - KEITHLEY INSTRUMENTS INCc09595e10vk.htm
EX-31.1 - EXHIBIT 31.1 - KEITHLEY INSTRUMENTS INCc09595exv31w1.htm
EX-22.1 - EXHIBIT 22.1 - KEITHLEY INSTRUMENTS INCc09595exv22w1.htm
EX-32.2 - EXHIBIT 32.2 - KEITHLEY INSTRUMENTS INCc09595exv32w2.htm
EX-31.2 - EXHIBIT 31.2 - KEITHLEY INSTRUMENTS INCc09595exv31w2.htm
Exhibit 32.1
Certification Pursuant to 18 U.S.C. Section 1350
I, Joseph P. Keithley, Chairman, President and Chief Executive Officer of Keithley Instruments, Inc. (the “Company”), certify, pursuant to 18 U.S.C. Section 1350, that:
(1) The Annual Report on Form 10-K of the Company for the period ended September 30, 2010 which this certification accompanies fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.
/s/ Joseph P. Keithley                                                            
Joseph P. Keithley
Chairman, President and Chief Executive Officer
December 15, 2010
A signed original of this written statement has been provided to Keithley Instruments, Inc. and will be retained by Keithley Instruments, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.