BS 5677:1979

Действует

Method (precision) for pressure calibration of one-inch standard condenser microphones by the reciprocity technique — 20 стр.

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Действует

Code of practice for centralized hot water supply, Buildings other than individual dwellings — 30 стр.

Действует

Specification for safety and efficiency of the gas heating equipment of commercial dishwashing machines — 20 стр.

Действует

Safety of domestic gas appliances, Specification for combined appliances: fanned-circulation ducted-air heaters/circulators — 42 стр.