This standard is applicable to smooth limit gauges used for inspection of holes and shafts (according to GB1800-1804-1979 "Tolerance and Fit").
GB/T 6322-1986 history
2008GB/T 10920-2008 Types and dimensions of screw thread gauge and plain limit gauge
1986GB/T 6322-1986 Types and dimensions of plain limit gauges
GB/T 6322-1986 Types and dimensions of plain limit gauges was changed to GB/T 10920-2008 Types and dimensions of screw thread gauge and plain limit gauge.