1. Specification for screw gauge limits and tolerances. Gauges for screw threads of Whitworth and BA forms Part 2, (9th November 1971) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (34 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Specification for screw gauge limits and tolerances. Limits of size for gauges for screw threads of Unified form diameters ¼ in and larger Part 4, (3rd April 1964) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (74 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗