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方箱是机械制造业中常用的计量器具。在平台测量中,方箱是必备量具之一。方箱通常放置在平板上使用,方箱可以单个使用,也可以成对使用,它起着支承、定位的作用。方箱主要用于机械零部件平行度、垂直度等的检验和划线。大部分方箱是用铸铁制成,也有用钢材或岩石制成的。方箱是具有6个工作面的空腔正方体,且两相邻工作面互相垂直,在其中一个工作面上有V
Square boxes are commonly used in machinery manufacturing measuring instruments. In the platform measurement, square box is one of the necessary measuring tools. Square boxes are usually placed on the flat to use, square box can be used individually, you can also use it in pairs, it plays a supporting role in positioning. Square box is mainly used for mechanical parts parallelism, such as the degree of vertical inspection and marking. Most boxes are made of cast iron, but also made of steel or rock. The square box is a cavity cube with 6 working faces, and the two adjacent working faces are perpendicular to each other. On one of the working faces there is a V