General purpose thermometers
standard by BSI Group, 02/12/1951

Electrical protection relays. Requirements for multi-input energizing quantity relays-Specification for directional relays and power relays
standard by BSI Group, 04/30/1984

Fraction-detective charts for quality control
standard by BSI Group, 07/29/1947

Specification for photographic grade aluminium potassium sulphate, dodecahydrate (potash alum)
standard by BSI Group, 04/28/1978

Non-reversible connectors and appliance inlets for portable electrical appliances (for circuits up to 250 V and 13 amperes).
standard by BSI Group, 10/31/1960

Engineers comparators for external measurement
standard by BSI Group, 07/13/1942

Steel conduits and fittings for electrical wiring
standard by BSI Group, 04/10/1933

Refrigerator oils
standard by BSI Group, 08/12/1958

Microchemical analysis. Apparatus for the determination of elements by other than combustion methods-Specification for nitrogen determination apparatus (micro-Kjeldahl)
standard by BSI Group, 06/15/1964

Specification for hard-drawn copper solid and stranded circular conductors for overhead power transmission purposes
standard by BSI Group, 04/14/1930