Megger MTB7671/2 Calibration Test Box

Here is a Megger MTB7671/2 test box designed to check that multifunction testers, insulation and continuity testers etc. are operating within accepted parameters in between annual calibrations. The tester is connected to the box, then the various tests are performed, and the results that are displayed should be within expected limits. It's not an alternative to proper calibration, but it gives peace of mind that equipment is working properly between calibration intervals.