1) Center oriented rod using imported materials, high precision, wear-resistant;
2) As per shell use superhard Al alloy material, therefore it avoid to damage instrument in-site woke, and to extend the instrument's life;
3) Pointer slider with external spring ring structure, not only it is convenient for the friction adjustment, but also it ensures that the friction force for pointer shaft and slider is
uniform, and to ensure the accuracy of the instrument.
The product accuracy is high relative to same products, at the same time , it quality is best and price is cheap, and instrument's life is long.