建筑工程以及水利兴修工程中,测设、检查和验收边坡相当费事。现利用几何原理设计一种简易的坡度测量工具——坡度尺。其构造原理见图1。该尺由水平尺杆AB、竖直尺杆BC、斜尺杆AC及OB组成。其中,A、B、C、O分别为4根尺杆中心轴线的交点。这4个点均用螺栓销铰接,以保证尺杆转动灵活,其中B点处采用蝶形螺栓,以随时调整尺杆交点位置。尺杆制作时要保证两 Construction and water conservancy projects, surveying and construction, inspection and acceptance of slopes quite troublesome. Now using geometric principles to design a simple gradient measurement tool - slope scale. The structure of the principle shown in Figure 1. The ruler consists of horizontal ruler AB, vertical ruler BC, tilt bar AC and OB. Among them, A, B, C, O, respectively, four feet of the center axis of the intersection. These four points are hinged with bolt pin, in order to ensure the flexibility of the foot rod rotation, which uses the B-point butterfly bolts at any time to adjust the location of the foot rod intersection. When making rod, make sure two