Auxiliary calibration device for pressure instrument

The utility model belongs to the technical field of pressure instruments, in particular to an auxiliary calibration device for a pressure instrument, which comprises a box body, a pressure instrument body mounted in the box body, a base arranged on one side, far away from the box body, of the surface of the box body, and a mounting assembly arranged in the base, the mounting assembly comprises two sets of inserting grooves symmetrically formed in the position, on one side of the base, in the box body, inserting blocks which are inserted into the inserting grooves and are of an L-shaped structure, and connecting blocks fixedly connected to the sides, away from the box body, of the surfaces of the inserting blocks, and bidirectional screw rods are symmetrically and rotationally connected to the interior of the base through bearings. The thread directions of the surfaces of the two groups of bidirectional screws are the same; through the arrangement of the mounting assembly, the pressure instrument body can be c