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Our Calibration Checkboxes enable you to verify the accuracy of your electrical test equipment quickly and easily, in between calibration ‘due’ dates. Essentially, calibration checkboxes are testers that are used to test test instruments!
Whether you simply need to verify dead test functions, such as insulation resistance and continuity readings, or live test instruments including loop impedance and RCD time/current measurements, Test4Less have a solution for you! We stock calibration checkboxes from Megger, Seaward and Socket & See, and are checkboxes are available from just £249 excl. VAT.