Special measuring device for gap size of escalator

The invention discloses a special measuring device for the gap size of an escalator. The special measuring device comprises a main scale and a vernier scale, the main ruler comprises a rectangular main ruler body, gap main scales formed on the left side of the main ruler body and depth main scales formed on the right side of the main ruler body. The front end and the rear end of the left side of the main ruler body are each provided with a stopping clamping block. The vernier scale slidably sleeves the main scale and comprises a bottom sliding plate, a left stop plate arranged on the left side of the bottom sliding plate, a gap vernier scale formed above the left stop plate, a right thickening plate arranged on the right side of the bottom sliding plate and a depth vernier scale formed above the right thickening plate; the device further comprises gap helical teeth, a depth measuring jaw and a locking device. 本发明公开了一种自动扶梯间隙尺寸专用测量装置，包括主尺、游标尺；所述主尺包括呈矩形状的主尺本体、成型于主尺本体左侧的间隙主刻度、成型于主尺本体右侧的深度主刻度，所述主尺本体左侧前、后端分别设有一只挡止卡