The Electronic Rubber Hardness Tester Calibrator is designed for in house calibration facility of Durometers (Rubber Hardness Tester Shore A, B, E, O, C, D & Do as per ASTM 2240). The Calibrator is provided with load cell for calibrating the spring load of Durometers with A & D scales. This tester serves Durometer users in a great way to cut costs for sending Durometer out for Calibration at the recommended intervals. If the Durometer reads within ±1 division of the point indicated on the scale, it is in Calibration.