建筑施工抄平时,人们习惯采用长木方作抄平工具。但是,这种方木端头为方形,再加上测量的标准位置较低,测量时偏差较大。我们在实际工作中对原来的方木标杆进行了改进:取一段长方木,一端用刨子刨平,这个面要与立面垂直。然后,用一块1毫米厚的铁皮制作一个三角,用螺丝钉固定在方木上(图1、2)。图1中a×b为方木顶面,c 可 When the construction of the building is repeated, people are accustomed to using long wooden tools for copying tools. However, this type of square wood head is square, and the standard position of the measurement is low, and the deviation during measurement is large. In the actual work, we have improved the original square wood pole: take a long rectangular wood, one end is planed with a plane, this surface should be perpendicular to the facade. Then, a triangle was made from a sheet of 1 mm thick iron and fixed on the square beam with screws (Fig. 1, 2). In Figure 1, a×b is the square top surface, c can be