Specification for electric luminaires (lighting fittings). Detail requirements-General purpose luminaires
standard by BSI Group, 10/25/1971

Steel conduits and fittings for electrical wiring
standard by BSI Group, 12/15/1923

Specification for steel double hexagon bolts 1250 MPa (180 000 lbf/in²) for aircraft
standard by BSI Group, 01/31/1979

Electricity meters
standard by BSI Group, 04/01/1937

Specification for non-domestic space heaters burning town gas
standard by BSI Group, 11/30/1962

Radio valve-bases and valve holders
standard by BSI Group, 12/01/1937

Specification for pitch-impregnated fibre pipes and fittings for below and above ground drainage
standard by BSI Group, 06/30/1978

Accuracy of machine tools and methods of test-Specification for numerically controlled milling machines, bed type, vertical spindle
standard by BSI Group, 08/29/1986

Luminaires. Particular requirements-Specification for air-handling luminaires (safety requirements)
standard by BSI Group, 12/31/1982

Measurement of voltage with sphere-caps
standard by BSI Group, 03/01/1944