Rajsen Machines Tools manufactures Computer Numerical Control - CNC Feedback Linear Scale. Rajsen Machines Tools supplies wide range of machine tools and components such as machine accessories, cable drag chain, encoders and couplings. The Computer Numerical Control - CNC Feedback Linear Scale is of two types, open and closed type. The open type is high precision and is designated JCT, the scale output wave is sine wave, they are mainly used in digital measurement equipment and offer a highest resolution of 0.1um.The closed type is mainly used in conjunction with the DRO counters on machine tools and similar equipment, these scales are designated JCX and have a scale output is square wave.