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BS 1659:1950Specification for tractive armature direct current neutral track and line relays for railway signallingstandard by BSI Group, 07/26/1950
BS 519:1950Specification for tractive armature direct current neutral-polar line relays for railway signallingstandard by BSI Group, 07/14/1950
BS 1655:1950Specification for flanged automatic control valves for the process control industry (face-to-face dimensions)standard by BSI Group, 07/12/1950
BS SP 22-27:1950+A2: 2011Specification for B.A. Washers. For aircraft purposes (primarily for instrument use)standard by BSI Group, 06/22/1950
BS SP 22-27:1950Specifications for B.A. washers for aircraft purposes (primarily for instrument use)standard by BSI Group, 06/22/1950
BS 870:1950Specification for external micro metersstandard by BSI Group, 06/09/1950
BS G 125:1950Specification for turn and slip indicators for aircraft purposesstandard by BSI Group, 06/07/1950
BS 811:1950Specification for cycle (B.S.C.) threads (formerly known as C.E.I. threads)standard by BSI Group, 05/24/1950
BS SP 21:1950Specification for lubricating nipples for aircraft purposesstandard by BSI Group, 04/28/1950
BS G 123:1949Specification for aircraft magnetic compass, remote-reading (non-stabilized)standard by BSI Group, 12/15/1949
BS G 122:1949Specification for aircraft magnetic compass, remote-reading (gyro-stabilized)standard by BSI Group, 12/15/1949
BS M 22:1949Specification for silica gel acid activated for aircraft purposesstandard by BSI Group, 10/17/1949