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, Seekonk, Digitool Solutions, 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.