Gage Makers Rule. It has been 'designed to confuse' not 'designed to. Below is the gage makers tolerance chart. Inspection and gaging tools nageswara rao posinasetti tolerance use appearance cost datum or reference 1 2 basic principles of gaging.
This is why we have this rule of thumb.
A gage r&r study is a critical step in process improvement projects. Familiarity may not always breed contempt, but in precision gaging, it can certainly lead to error. Mark's statement simply explains why the gage maker's rule exists, i.e. This means that in american wire gage every 6 gauge decrease gives a doubling of the wire diameter, and every 3 gauge decrease doubles the wire cross sectional area. .the gage maker's tolerance to be applied to go/no go working ring gages to check a shaft sizes and the gage maker's tolerance to be applied to go/no go working ring gages to check a shaft. Similar to db in signal and power. Inspection and gaging tools nageswara rao posinasetti tolerance use appearance cost datum or reference 1 2 basic principles of gaging. This document provides tolerances for class x and class w tolerances of pitch diameter.
