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When testing a calibration checkbox we like to make sure that we accurately and thoroughly test every possible output from the checkbox. If permittable, we also check that the checkbox is correctly measuring the output voltage from a multi-function tester.
PAT Checkbox Calibration - We test every possible range that the PAT calibration checkbox outputs.
Ethos, Fluke, Kewtech, Martindale, Megger, Metrel, Seaward, Socket & See, TIS, and more. If you want to check before booking your calibration, CLICK HERE
To ensure that your Check Box / PAT Checkbox continues to provide you with accurate results, it is recommended that you re-calibrate your Checkboxes annually.