Calliper gauge digital-display measuring instrument

The utility model relates to a caliper gauge digital-display measuring instrument, which aims to solve the problem that the existing measuring instruments have the defects of complex operation and low efficiency. The utility model comprises a workbench 5 and a probe guide rail 6 which are fixedly connected with a pedestal, a fixed probe 8 and a moving probe 14 which can slide are fixedly connected with the probe guide rail 6, a measuring device of a tractor of the moving probe 14, a grating guide rail 24 which is fixedly connected with the pedestal and is mutually parallel with the probe guide rail, a grating ruler 25 which is matched with the moving probe and can slide is arranged on the grating guide rail, a light source seat 33 which has a light source 31 and is matched with the grating ruler is arranged on the pedestal, and a digital display device of a display screen 36. The utility model has the advantages of high measuring precision large measuring range and convenient operation; in addition, the efficiency can be raised by six to eight times.