251. Hearing aids. Specification for dimensions of the nipple and sealing device for insert earphones Part 5, (30th March 1984) 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) ↗
252. Graphical symbols for components of servo-mechanisms. Transductors and magnetic amplifiers Part 1, (25th May 1960) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (14 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
253. Methods of test for footwear and footwear materials. Codes of practice. Code of practice for the comparative evaluation by wear trial of materials, components or constructions Part 6.1, (30th November 1981) 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) ↗
254. Graphical symbols for components of servo-mechanisms. General servo-mechanisms Part 2, (28th February 1964) 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) ↗
255. Method for evaluating the application of and interaction between components in upholstered furniture. (30th June 1982) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (12 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
256. Series 1 shipborne barges. Specification for main dimensions Part 1, (30th April 1980) 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) ↗
257. Specification for ships's side scuttles. (31st October 1974) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (46 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
258. Series 4 shipborne barges. Specification for main dimensions Part 1, (28th February 1985) 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) ↗
259. Specification for ships' derrick fittings. (28th November 1980) 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) ↗
260. Recommendations for the co-ordination of dimensions in shipbuilding: co-ordinating spaces for internal subdivision. (28th February 1977) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (30 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗