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面積儀是用來求面積的。使用这种儀器無論是怎樣複雜的圖形,只要用它的指針沿着圖形的周界一轉,數目馬上可以求出,既簡單又便利,省腦力又省時間,適用於工程界各個地方,其形状如第一圖。其保管与使用方法茲介紹如下:一、保管面積儀是一种很精細的儀器,任何損壞即使是肉眼所不能察出的,都將使結果失掉準確性,所以应隨時注意下面幾點:(一)对各軸部应極端注意,不要讓它們受到额外的压力,否則一旦軸部被損傷,影响精確度很大,而且不易修复;
Area meter is used to find the area. No matter how complex the use of such equipment graphics, as long as the use of its pointer along the perimeter of the figure of a turn, the number can be calculated immediately, both simple and convenient, save time and effort, suitable for all parts of the world, its Shape as the first figure. The custody and use of the method are described below: First, the custody area meter is a very fine instrument, any damage even if the naked eye can not be detected, will result in the loss of accuracy, it should always pay attention to the following points: A) The shaft should be extremely careful not to let them be subjected to additional pressure, or once the shaft is damaged, the impact of a great deal of precision, and not easy to repair;