Large-scale container circular cylinder molding inner wall dimension form and position combination measuring device

The invention relates to the technical field of measuring equipment, and relates to a large-scale container circular cylinder forming inner wall size, shape and position combined measuring device which comprises a supporting seat and a center rod fixedly connected to the upper side of the supporting seat, wherein a plurality of telescopic pieces used for measuring the inner diameter of a cylinder are arranged in the circumferential direction of the center rod, and each telescopic piece comprises a first telescopic rod, and a second telescopic rod, wherein the first telescopic rod is sleeved with the second telescopic rod, hemispheres are arranged at the ends, away from the center rod, of the second telescopic rods, and the center rod is further provided with driving pieces for driving the multiple second telescopic rods to slide relative to the corresponding first telescopic rods. The first telescopic rod and the second telescopic rod are each provided with a first scale groove. The measuring device has the a