1. Specification for lubricating nipples for aircraft purposes. (28th April 1950) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (8 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Specification for terminals for electrical apparatus for railway signalling purposes. (30th December 1950) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
3. Specification for turn and slip indicators for aircraft purposes. (7th June 1950) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (8 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗