Fixture measurement building system Base plate flatness adjusting device and method

The invention relates to a device and a method for adjusting flatness of a building system Base plate through clamp measurement, the adjusting device is composed of a Base plate, a plurality of measuring blocks and adjusting shims, the plurality of adjusting shims are arranged between each measuring block and the Base plate, and the total thickness of the adjusting shims is 3mm. A plurality of adjustable measuring blocks are additionally designed on the clamp, the number of the measuring blocks is determined according to the size of the clamp, the measuring range of the clamp is covered, when a clamp precision measuring system is established, the measuring blocks are used for replacing a Base plate, and the flatness is ensured to be within tolerance by adjusting gaskets of the measuring blocks, so that the measuring precision of the clamp is ensured; the flatness of the base plate of the clamp is flexibly adjusted without depending on the original flatness of the base plate, so that the inherent state of an o