Vernier caliper convenient to carry

The utility model discloses a portable vernier caliper comprising a main scale and a placing cylinder, one end of the main scale is provided with a first measuring claw, and the surface of the main scale is provided with a slide rail. According to the utility model, the slide rail, the slide sheet, the rotating seat, the first fixing hole, the second fixing hole, a second fastening screw, a slide groove, a limiting hole, a limiting plate, a threaded column and an adjusting seat are matched for use, so that the vernier caliper is convenient to carry, and after the vernier caliper is used, a worker rotates the second fastening screw, so that the vernier caliper is convenient to carry. A second fastening screw is enabled to be far away from a first fixing hole, then a worker rotates a first measuring claw through a rotating seat to enable the first measuring claw to be parallel to a main ruler, then rotates an adjusting seat to enable the adjusting seat to drive a limiting plate to be far away from a limiting ho