... and other fields,and also are the indispensable mechanics testing instruments of every technical high ,secondary school and research institutes ... × 1024), C interface 25mm lens.laser sub-optocoupler (532nm fiber).small optical platform (60cm × 60cm).stripes real-time display ... camera (1280 × 1024), C interface 25mm fixed focal lens150mw fiber-optic cold light source small optical platform (90cm × 30cm ...