Gauge positioning pin

The utility model discloses a gauge positioning pin, relates to the technical field of positioning pins, and solves the problem that an existing positioning pin cannot be quickly assembled under the condition that the operation space is limited. Comprising an outer sleeve, limiting assemblies and driving assemblies. A via hole is formed in the outer sleeve in the length direction; the limiting assembly comprises a hook piece and a guide shaft, the hook piece comprises a hook part, a lengthening rod and a pin shaft, the lengthening rod is arranged in the via hole, the hook part and the pin shaft are arranged at the two ends of the lengthening rod respectively, and the end of the hook part extends out of the first end of the outer sleeve; the end, close to the hook part, of the lengthening rod is further provided with a guide strip hole, the guide shaft is in sliding fit with the guide strip hole, and at least one end of the guide shaft is fixedly connected with the inner wall of the via hole. The driving assem