BS 969:1982

This British Standard specifies the tolerances and limits for simple forms of limit gauges, such as cylindrical plain plug, ring and gap gauges, and is intended for reference by component producers and gauge makers when gauge limits have not been stipulated.

It specifies gauge tolerances for workpiece tolerances in ranges between 0.009 mm and 3.200 mm and how gauge limits are related to the workpiece limits. It also specifies types of gauge according to size and minimum workpiece tolerance.

The use of the tables, principles of the gauging system and dimensions in imperial units are outlined in this standard’s appendixes for those who continue to need the Information.