Positioning caliper for measuring bridge embedded parts and construction application of positioning caliper

The invention relates to the technical field of positioning calipers, in particular to a positioning caliper for measuring bridge embedded parts and construction application of the positioning caliper. The technical problems that an existing positioning caliper is single in function, inaccurate in measurement result and time-consuming and labor-consuming in measurement are solved. The positioning caliper comprises a base, the top of the base is slidably connected with a mounting plate, the top of the mounting plate is rotatably connected with a placing plate, a bridge embedded part is placed at the top of the placing plate, a groove is formed in the base, a transmission assembly for driving the placing plate to rotate is arranged in the groove, and the top of the base is fixedly connected with a sliding rod. The positioning caliper is simple to operate, capable of measuring the length, width, height and inner diameter of each part of the bridge embedded part, comprehensive in function, accurate in measurement