This British Standard specifies the most important design and
metrological characteristics of gauge blocks with a rectangular
cross-section and a nominal length ln of not more than 4 in.
Limit deviations and tolerances are stated for the calibration grade K
and for the grades 0, 1 and 2 for various measuring purposes.
BS 4311:2007 Referenced Document
BS EN ISO 1 Geometrical product specifications (GPS). Standard reference temperature for the specification of geometrical and dimensional properties*, 2022-07-31 Update
BS EN ISO 14253-1 Geometrical product specifications (GPS). Inspection by measurement of workpieces and measuring equipment. Decision rules for verifying conformity or nonconformity with specifications*, 2018-02-28 Update
BS EN ISO 6507-1 Metallic materials. Vickers hardness test - Test method*, 2023-10-31 Update
BS ISO 1101 Geometrical product specifications (GPS) - Geometrical tolerancing - Tolerances of form, orientation, location and run-out
BS 4311:2007 history
2007BS 4311-1:2007 Gauge blocks manufactured to imperial specification – Part 1:Specification and validation
1993BS 4311-3:1993 Specification for gauge blocks and accessories - Gauge blocks in use