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在划大工件圆弧时,常用地规这个工具。但过长的地规不便存放,如改制一下地规杆两端结构(如图所示),就可做到易存好用。用时把两
In the large workpiece arc, it is commonly used to gauge this tool. However, the regulations are not conducive to long storage, such as the restructuring of the structure at both ends of the rod (as shown), you can do easy to save easy to use. When using two