The major way to improve the linear precision of Rotary Synthetic Carbon Film Potentiometer is to trim resistance using the advanced equipments.

A new cryogenic carbon thin film resistance sensor which is of small size, low heat capacity, high sensitivity, fast response and small magnetoresistance is reported.

The products of resistance include carbon film resistor, metal film resistor, oxidation resistor, fuse, leap line, patch resistor and cement resistor.