VAT系列數字式特斯拉計，基于霍爾效應，用于測量各種鐵氧體永磁、稀土永磁的表面磁場、間隙磁場，各種通電線圈所產生的磁場，及金屬件的剩余磁場。三位半數字顯示，N，S直接區分，便于用戶攜帶。可匹配橫向、縱向和薄型探頭。

VAT series dial Teslameter is a kind precision instrument applying Hall effect to measuring the magnetic field strength. It can be used to measure the surface magnetic materials, the magnetic field in the gap of magnetic circuit of loudspeaker, the magnetic field produced by electrified coils, and the remanent magneti of metal parts. The value of magnetic field strength is displayed in dials. And N,S pole can be distinguished directly. This teslameter in measuring, easy to operate, light in weight, convenient for carrying, etc. Three kinds of measuring probes,viz.transverse,lonudinal and thin probe head can be provided.Users can choose the probe according to what they need.