议形位公差标注

Talk About Label of Shape and Place Error

国家标准对形位公差指引线制定有一般的标注示例，但没有较详细的文字说明，致使形位公差指引线出现比较混乱的的使用问题。文章介绍国家标准中形位公差框格指引线的一般情况，列举出一般图纸、资料、书籍中的形位公差框格指引线的常见示例，同时列举和分析了一些不同寻常的形位公差框格指引线情况。

There are some label samples about shape and place error in national standard, but without letter explanation. It makes shape and place error label leader line using disordered. This article introduces the common use of shape and place error label leader line in national standard, enumerates the public samples of shape and place error label leader line in drawings, datum and books, enumerates and analyses some singular samples of shape and place error label leader line in some books.