Engineering measuring scale

The utility model discloses an engineering measuring scale which comprises a tooth body and scale marks, a supporting groove is formed in the surface of the tooth body, a supporting block is connected in the supporting groove in a sliding mode, the sliding direction of the supporting block is parallel to the length direction of the tooth body, and a laser pen is fixedly connected to the side, facing the scale marks, of the supporting block. And laser rays emitted by the laser pen are parallel to the scale marks. The laser pen emits the laser line, when the tooth body leans against one side of an object, a straight laser line appears on the surface of the object, at the moment, a worker can carry out scribing operation along the laser line, the straightness of the scribed line is better guaranteed, and therefore the measurement accuracy is improved. 本实用新型公开了一种工程测量尺，包括齿体和刻度线，所述齿体的表面开设有支撑槽，所述支撑槽内滑动连接有支撑块，且所述支撑块的滑动方向平行于所述齿体的长度方向，所述支撑块朝向所述刻度线的一侧固定连接有激光笔，且所述激光笔发射的激光线平行于所述刻度线。通过激光笔发射激光线，当齿体靠在物体的一侧位置时，物体的表面会出现一条笔直的激光