Combined fixed calipers

The utility model discloses a pair of combined type fixed calipers. Characterized in that it is characterized in that it comprises, the clamp comprises a left clamp body, a mounting bracket and a right clamp body, the left clamp body, the installation support and the right clamp body are arranged in a split mode. The left clamp body is arranged on the left side of the mounting bracket; the right clamp body is arranged on the right side of the mounting bracket; the left caliper body, the installation support and the right caliper body are connected through fasteners, the combined fixing caliperis divided into the left caliper body, the installation support and the right caliper body, piston holes of the inner caliper body and the outer caliper body can be directly machined through straight-shank cutters, cutter vibration is not likely to happen, the machining cost is reduced, and meanwhile a sealing groove and a dustproof cover groove are machined more conveniently. The installation support, the left clamp bod