Three-way plate type joint meter for building

The utility model relates to a building three-way plate-type joint meter, the building three-way plate-type joint meter comprises a measuring piece and a positioning assembly, the positioning assembly comprises a first positioning piece and a second positioning piece which are installed at the two sides of a gap in a matching manner, and a third clamping strip can realize Z-direction clamping with the first clamping strip, so that the first clamping strip can realize Z-direction clamping with the second clamping strip, and the second clamping strip can realize Z-direction clamping with the second clamping strip. The fourth clamping strip and the second clamping strip can achieve X-direction clamping, the sixth clamping strip and the fifth clamping strip can achieve Y-direction clamping, building cracks can be stably and continuously measured and analyzed through the measuring meter, and the measuring meter is wide in application range, suitable for longitudinal joints, joints and surface cracks of buildings a