Calibration All Calibrations are traceable to National and International standards as per the requirements of ISO9001. Electrical Equipment: SafeTcheck and Trisan S8 Portable Appliance Testers Insulation Testers Clamp Meters Multi Meters Amp Meters Ohm Meters Shunts RCD Testers Trisan specialises in calibration of Portable Appliance Testers, in particular our own range with additional services of … Continue reading Calibration