1. Specification for British Association (B.A.) screw threads with tolerances for sizes 0 B.A. to 16 B.A. (25th May 1951) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (22 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Specifications for solid taper pins for aeronautical purposes. Specifications for solid taper pins for aeronautical purposes (30th March 1951) 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) ↗
3. Specifications for split taper pins for aeronautical purposes. (30th March 1951) 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) ↗
4. Wood windows. Wood double-hung sash and case windows (Scottish type) Part 3, (27th August 1951) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (26 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗