Strip mine slope angle measuring tool

A strip mine side slope angle measuring tool belongs to the technical field of mine measuring tools and is used for quickly measuring the angle of a strip mine side slope. According to the technical scheme, an angle measuring graduated scale is a semicircular protractor, a fixed level ruler and a movable measuring ruler are long-strip-shaped board rulers respectively, the angle measuring graduated scale, the movable measuring ruler and the fixed level ruler are connected through connecting bolts, and an infrared emitter is installed at the upper end of the movable measuring ruler; a light beam of the infrared emitter is along the central axis of the movable measuring scale in the length direction, a fastening screw hole is formed in the axis of the upper portion of the movable measuring scale, a semicircular groove is formed in the semicircular scale face of the angle measuring scale, and the front end of the fastening bolt penetrates through the semicircular groove of the angle measuring scale to be screwed