Pro Torque Tools offers electronic torque testers and digital torque analyzers online at low prices. There are 3 things to consider when buying a torque wrench calibration tester: 1. Accuracy 2. Range 3. Circuitry. We carry digital torque testers and analog torque testers from leading manufactures like CDI & Williams Industrial Brands, Seekonk, PrecisionInstruments,and Norbar. We carry top brands, so you are sure to buy a high quality torque tester. All Electronic and Manual Torque Testers & Torque Wrench Analyzers come with a Certificate of Calibration, traceable to N.I.S.T. from the manufacturer.