Downloadable computer programs and mobile phone applications featuring software for data storage, namely, for storing digital electronic data received from hand tools, hand tool testing apparatuses, and calibration devices for hand tools; Downloadable computer programs and mobile phone applications featuring software for data exchange, namely, for transmitting and receiving data between hand tools, hand tool testing apparatuses and calibration apparatuses for hand tools; Downloadable computer programs and mobile phone applications featuring software for calibration processing, namely, for processing electronic data received from hand tools, apparatuses for testing hand tools, and calibration apparatuses for hand tools; Computer software applications, downloadable, featuring software for verifying hand tools are in proper working condition; Recorded computer software for providing a database for tracking and monitoring the location, lifecycle, durability, discard, and the frequency of calibration of hand tools, including the generation of notifications and reports of the noted data; Electronic numeric displays; Precision measuring apparatus, namely, protractors; Pressure indicators; Sensors, namely, piezoelectric sensors; Pressure gauges; Precision measuring apparatus, namely, digital force gauges; Ergometers not for medical purposes; Circuit testers; Precision measuring apparatus, namely, digital torque gauges; Tensile test device, namely, tension testers; Tensile resistance tester, namely, resistance measuring instruments.