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塔尺,是建筑工程测量中的必备工具。旧有塔尺,观察尺身铅直的水平气泡,功能单一,照顾了左右,照顾不了前后。如将塔尺安上形似
Tower ruler is an essential tool in the measurement of construction projects. The old tower ruler was used to observe the vertical horizontal bubble of the scale body. The function was single, taking care of the left and right, and taking care of the front and rear. If the tower is shaped like