Keep your test instruments accurate and reliable with the CalCard Electrical Calibration Check Card — the essential tool for electricians, engineers and professionals who depend on precise readings. Designed for insulation resistance testers, continuity testers, multimeters, socket testers, PAT testers and full multifunction testers, this compact device provides quick, repeatable reference values that help verify your equipment before every job. Using the CalCard allows you to spot meter drift, worn leads, poor probe contact or inaccurate readings early, helping prevent errors during electrical testing. The card includes carefully selected insulation-resistance and low-ohm continuity values, giving you a trusted baseline to compare against. By checking your instrument regularly, you maintain confidence in readings when testing circuits, protective devices, appliances and installations. Engineered with a robust laminated construction, the CalCard features recessed, gold-plated contact pads that protect against corrosion and ensure consistent contact with tester probes. Its credit-card size fits comfortably in any tool pouch, test meter case or pocket, making it an ideal accessory for professionals working across domestic, commercial and industrial environments. This calibration card supports ongoing verification between formal calibrations, helping meet industry expectations for maintaining test meter accuracy. Whether you use a multimeter, insulation resistance tester, circuit tester, voltage tester, RCD tester or any multifunction tester, the CalCard gives you the reassurance that your equipment continues to perform correctly. Easy to use, reliable and extremely portable, the CalCard is a cost-effective solution that supports safe working practices and more accurate electrical testing. It is an essential tool for electricians wanting dependable results from their testing equipment every day, on every installation.
