Laser demarcation device precision measurement device

The utility model discloses a laser demarcation device precision measurement device which comprises a shell, an objective lens, a reticle, an imaging objective lens, a beam-splitting plate, a charge coupled device (CCD) camera containing a CCD light-sensitive surface, and a display screen, wherein centers of the objective lens, the reticle, the beam-splitting plate and the CCD light-sensitive surface are positioned on the same line; the objective lens, the reticle and the beam-splitting plate are positioned in the shell; the objective lens is arranged at one end of the shell; the other end of the shell is connected with the CCD camera; the CCD camera is connected with the display screen. The device is small in occupied space, the imaging objective lens and the CCD camera do not need to be removed in the process of calibrating 0 position of the reticle, only an illuminating light source needs to be turned on, the reticle is observed through calibration instruments such as automatic compensated levels or electr