This standard specifies the unnoted tolerances of linear and angular dimensions and the unnoted shape and position tolerances of geometric elements on product drawings, collectively referred to as general tolerances (which may be referred to as unnoted dimensional tolerances and geometric tolerances when used), and stipulates Marking method on product drawings. This standard applies to product drawings of tobacco machinery, and other machinery and equipment can also be used with reference.
YC/T 13-1993 history
1970YC/T 13-1993 Tobacco machinery unspecified dimensional and geometric tolerances