Ensure safety and accuracy with Appliance Tester Calibration by Zenith Instruments. We calibrate appliance testers (PAT devices) to check insulation resistance, earth continuity, polarity, and more—keeping your electrical appliances compliant and hazard-free. Whether for industrial sites, construction, or routine safety inspections, our technicians use precision instruments and certif... https://zenithinstruments.com.au/pages/appliance-tester