Device for calibrating optical measuring instrument

The utility model relates to the field of optical measuring instrument calibration, in particular to a device for calibrating an optical measuring instrument, and adopts the technical scheme that the device comprises a ruler plate and a measuring projector, one end of the top surface of the ruler plate is fixedly provided with a fixed rotating shaft, the top surface of the ruler plate is provided with a sliding chute, and the measuring projector is arranged in the sliding chute. A sliding rotating shaft is slidably installed in a sliding groove of the ruler plate, outer sleeve rods are fixedly installed on the top face of the fixed rotating shaft and the top face of the sliding rotating shaft, inner sleeve rods are slidably installed on the inner walls of the outer sleeve rods, inner rods are slidably installed on the inner walls of the inner sleeve rods, and laser calibration modules are fixedly installed at the upper ends of the inner rods. The beneficial effects of the utility model are that the laser lamp