... angle, contour and surface shape.2.It is widely used in meter, electron, aerospace machinery, light industry, college, research ... 0.001mmProjector screenScreen size (mm): Ø 312 Used range>Ø 300(with the meter line)Screen rotary range: 0°~360°Resolution(X ... , Coordinate Measuring Machine series etc.The products are widely used in electronics, plastics, moulds,machinery,hardware, instruments, connectors ...