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45°角尺是在普通角尺的基础上,附加一块45°板和角钢边厚调节板构成。主要功能是在角钢上画45°倾斜线和在圆柱形工件上划直径及定圆心。
45 ° square is based on the ordinary square, add a 45 ° plate and angle plate thickness adjustment plate. The main function is to draw a 45 ° slant line on the angle and draw a circle on the cylindrical workpiece.