Large-screen, high resolution and accuracy, reading convenient, fast and accurate. Measuring accurate, simple, rugged and durable, Economical and practical, fully in line with a wide range of industries need to test. The manual 2 point through trimmer to ensure the accuracy of measurement data. BNC with the composite electrode and 9 V battery folded, around the world to facilitate the replacement of batteries and electrodes. In short, a measurement a wide range of high precision, small size, the use of convenient, cheap and good products.