The utility model discloses a multipurpose electronic digital displaying caliper gauge belonging to an electronic measuring instrument, which is composed of a gauge body, a measuring and sensing system, an adjustable measuring rod component, a plurality of measuring claws, etc. The utility model not only can accurately measure outer diameters, rabbets and length, but also can accurately measure inner diameters, middle diameters of inner screw threads and inner grooves, and can also measure the length of common normal. The utility model has wide adjustable measuring range and various specifications, can be made into a tool for measuring small size segments more than 10 mm or large size segments less than 1500 mm. The utility model has the advantages of multiple purposes, portable digital display, electromechanical integration, good cost performance and high precision, and the resolution, the measuring accuracy and the value display error all achieve the micrometer level.