Aperture and pitch measuring scale

The utility model discloses an aperture and pitch measuring scale, which belongs to the field of mechanical equipment measuring tools and comprises a vernier scale with a digital display function and two inside micrometers. The vernier scale is composed of a scale frame, a liquid crystal display screen and an integrated circuit. The liquid crystal display screen is electrically connected with the integrated circuit; a sliding groove a is machined in the middle of the ruler frame, a clamping ring a and a clamping ring b are installed on the sliding groove a, the clamping ring a is fixed to one end of the sliding groove a, and the clamping ring b is in sliding fit with the sliding groove a. The snap ring b is provided with a movable grid, the ruler frame is provided with a fixed grid, and the movable grid and the fixed grid are electrically connected with the integrated circuit; when the clamping ring b provided with the movable grating moves on the sliding groove a in the ruler frame provided with the fixed gr