Martindale CB12 Calibration Box BSPP The essential test tools and

The essential test tools and equipment needed to implement a safe isolation procedure in accordance with Electricity at Work regulations are a dedicated voltage indicator

Megger LTW425 Earth Loop Tester

Universal - Uses standard 4mm connections and alternative BS1363 socket for connecting your tester

0kHz (V) Accuracy ± 0

7 mmH2O: ± 1

Martindale CB12 Calibration Box BSPP The essential test tools andMartindale CB12 Calibration Box This calibration check box allows you to check the calibration of insulation and continuity testers. Description The CB12 is a portable check box for checking the resistance and continuity ranges of multimeters, insulation testers, multifunction clamp meters and test instruments which use resistance as part of their measurement capability. This check box provides a quick method of verifying that a test instrument is