Unit1 Two methods of designating limit dimensions are considered as standard
One method is the maximum material method in which the large dimension is placed above the smaller dimension for male parts, and the reverse is true for female parts
This method is well suited for small lot quantities because it is likely that the machinist himself may check the dimension of the parts
In so doing he will be verifying initially the large dimension of the male parts and the smaller dimension of the female part
other method is the maximum number method and is preferred by production and quality control departments
In this method of designating a dimension , the large number is always placed above the smaller number ,regardless of whether the part is male or female
两种方法都被看作是指定极限尺寸标准
一种方法是最大的资料法,大尺寸
