Can the laser collimator be used on the wall?

Laser verticality instrument can be used on the wall. The precision laser wall verticality measuring instrument has a frame, and a black screen ruler is installed at the top of the left end of the frame. A plurality of reflecting screens are installed at the joint of the black screen ruler and the frame. The right end of the frame is hinged with a movable guide ruler, and the inner side of the movable guide ruler is sequentially provided with a main reflecting screen and a laser lamp holder vertically and fixedly connected with the main reflecting screen, and a laser lamp is embedded in the front end of the laser lamp holder. The light emitted by the laser lamp forms an optical path. The upper part of the movable ruler and the top of the black ruler are covered with telescopic covers to form an opaque darkroom. The lower part of the frame is connected with an adjusting leg. The invention is not only suitable for detecting and measuring the verticality of various walls. The invention has the advantages of compact and simple structure, convenient use, no need of complicated manual measurement and calculation, time and labor saving, and safety guarantee for the construction engineering industry.