Vernier plug ruler for escalator and elevator dimension measurement

The utility model provides a vernier plug ruler for measuring the size of an escalator and an elevator, and belongs to the technical field of measuring tools. The wedge-shaped ruler comprises a wedge-shaped ruler body, filler gauge scales are arranged on the top face of the wedge-shaped ruler body, a vernier sliding block capable of sliding relative to the wedge-shaped ruler body is installed at the top of the wedge-shaped ruler body, the tip of the wedge-shaped ruler body can stretch into the gap, and the vernier sliding block is used for indicating the measured gap size on the surfaces of the filler gauge scales. The tail part of the wedge-shaped ruler body is provided with a straight ruler body extending from the wedge-shaped ruler body, the side surface of the straight ruler body and the side surface of the wedge-shaped ruler body are provided with straight ruler scales which are connected with each other, and the tail end of the straight ruler body is provided with a baffle plate. The vernier plug ruler