Commonly used tape measure: bai is used to measure the […]
Commonly used tape measure: bai is used to measure the elevation, width, and the size and spacing of all objects related to the construction.
Infrared dao line: the error of the line drawn by infrared is relatively small, used for positioning, inspection, etc., construction positioning is more accurate and convenient.
Level ruler: used to measure the horizontality or verticality of an object. Relying ruler: The function is similar to the level ruler, but the error is relatively large.