It is a slim instrument which uses the latest internal magnetic measurement structure. It has the characteristics of high sensitivity, light weight, compact structure and good anti-magnetic performance. The whole circuit is protected by a fuse, and the measuring mechanism is further equipped with a silicon diode protection device to protect the circuit and parts movable against damage when oveoaded. The dial has a wide field of vision and is equipped with a reflective mirror which can reduce parallax and make the reading clear and precise. The circuit board components are made of gold-plated circuit boards with clear circuit and good contact performance. The circuit boards are mounted in a board structure suitable for maintenance. Protection against external magnetic fields: 0.4 kA/m Frequency: 45Hz ~ 65Hz Damping time: 4 s (max.) operating temperature: 0~40 Working Humidity: 25%~80% RH size: 150*100*30mm Package: 1 part analog multimeter2 pieces of test pins