Features: This digital readout kit can be installed on a variety of woodworking and metalworking machines allowing conversion to digital readout. Remote readout display convenient for reading and operation. The design is novel and has strong anti-interference ability. Quick response speed of 3m/s, no overspeed error occurred. The display has a magnet on the back, which can be attached to the iron and is more convenient to use. It is used to be equipped together with various industry lathes and upgrade old lathe. Specifications: Measuring range: 0-150 (mm) Accuracy: ±0.06 Size: as the picture Battery: 2 * 3V CR2032 button battery (not included) Weight: 313g Detail: ABS: relative measurement and absolute measurement conversion Mm/in: Metric and imperial standard conversion Zero: Data reset Set: In the imperial standard measurement state, each time the button is pressed, the resolution of the fraction part is switched between 1/32,1/64,1/128. Package included: 1 x Digital readout kit (battery not included) 1 set x Install fittings