Blue Milli volt drop test appratus, Size: Standard

The Blue Millivolt Drop Test Apparatus (Standard Size) is a specialized, compact electrical instrument designed to measure voltage drops across high-current contacts like circuit breakers, switches, and busbar joints. Featuring a blue enclosure and a 0–2000 mV range, it uses a constant DC current source (typically 1A–400A) to identify faulty, high-resistance joints, aiding in preventive maintenance.