Cleveland Electronic Instruments Wholesale 23500 Mercantile Rd # I PPM in Ohio makes precision standard and custom test equipment including ohmmeters, bond meters, intrinsically safe ohm meters, null-meters, nano-voltmeters, electronic load, electrical safety compliance tester, signal conditioner, 16 channel isolated pow Cleveland OH Electronic Instruments Wholesale PPM Inc www.ppminc.com PPM Ohio null meter nullmeter null detector ohmmeter megohm meter megohmmeter microohmmeter micro ohm meter micro ohmmeter nanovoltmeter strain gage excitation multi channel source eload megger DC electronic loads battery test powe PPM Ohio null meter nullmeter null detector ohmmeter megohm meter megohmmeter microohmmeter micro ohm meter micro ohmmeter nanovoltmeter strain gage excitation multi channel source eload megger DC electronic loads battery test powe Business Reviews PPM Inc Testimonials