Electronic digital display small angular displacement measuring instrument

The utility model discloses an electronic digital display small angular displacement measuring instrument, and two detection functions of small angular meter indicating value errors and micrometer dial indicating value errors are integrated in one. The electronic digital display small angular displacement measuring instrument not only has the function of detecting indicating value errors of a small angular meter, such as a bubble level meter, a combined diagram level and an autocollimator, but also has the function of detecting indicating value errors of a micrometer dial, such as a mechanical dial comparator, a reed-type comparator and an inductance micrometer. The electronic digital display small angular displacement measuring instrument is characterized in that a platen assembly is designed and disposed on a precision slab; a lifting device for micro motion adjustment of a platen to produce small angular inclination is rotated, so as to enable small angular inclination of the platen; and thus, the indicating value errors of the small angular meter or of the micrometer dial can be detected point by point at a desired measuring interval. The electronic digital display small angular displacement measuring instrument is simple in structure and high in detection efficiency, and the system is stable and reliable.