

🔧 Stay sharp, stay certified — calibrate with confidence!
The CalCard Calibration Checkbox is a compact, lightweight tool designed for electricians to quickly verify the accuracy of insulation and continuity resistance measurements on-site. Approved by leading industry bodies including NICEIC and IET, it prevents instrument drift and ensures reliable readings, fitting conveniently in your pocket or on your keyring for constant readiness.
| Manufacturer | CalCard |
| Part number | Checkbox Card multibrand |
| Item Weight | 1 Kilograms |
| Package Dimensions | 14 x 9.6 x 1.02 cm; 1 kg |
| Batteries | 1 AAA batteries required. |
| Item model number | Checkbox Card multibrand |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |
| Battery Cell Type | Alkaline |
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