Martindale CB12

Feb 2023 - this product has now been discontinued by the manufacturer.

The Martindale CB12 checkbox is a simple tool that allows you to verify your insulation testers or multimeters are working within specification. Unlike similar products on the market, the Martindale CB12 features only one connection for your test leads, with 12 different insulation ranges being selected using a rotary dial, ensuring you can check your instruments quicker.

The unit is housed in an impact resistant ABS case and is small enough to carry in your toolbox, so you can easily verify your instruments in the field.

This item is supplied with a calibration certificate.