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皮数杆,又名线杆,俗称线杆子,也有叫画图杆的。它是瓦工砌筑砖墙时的控制墙体竖向标高的重要工具。
Leather bar, also known as the pole, commonly known as wire rod, also called the drawing rod. It is an important tool for controlling the vertical elevation of a wall when a masonry brick is masonry.