1. Simple operation 2.Double work mode 3.Various test coils 4.Test: magnetic parameter, Br, Hcb, Hcj, (BH)max, Hk and ... , Hk and so on, and could meet different requirements on test function, precision, power capability, reliability, efficiency, price, local ... mode: Adopt the whole computer mode; or the digital transistor also reads 5 parameters directly, automatic drawing of recording instrument ...