Go and not go screw plugs, ring and caliper; check plugs for adjustable screw rings and calipers; check plugs and wear check plugs for solid screw ring gauges; go and not go plain plug, caliper and ring gauges. Uses of various types of gauges, tolerances, general design features. Inspection procedures and settlement of disputes.Cross References:BS 919:Part 1BS 1044BS 2517BS 3643 Replaces BS 919:Part 2:1952.Incorporates the following:AMD 1523 published 15 July 1974