541. Highway parapets for bridges and other structures. Specification for parapets of metal construction Part 1, (30th March 1990) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (48 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
542. Industrial hearing protectors. Specification for ear muffs Part 1, (30th November 1989) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (19 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
543. Road lighting. Code of practice for lighting for motorways Part 10, (31st August 1990) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (19 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
544. Specification for flickermeters. (11th February 1993) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (15 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
545. Structural use of timber. Code of practice for permissible stress design, materials and workmanship Part 2, (30th December 1988) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (120 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
546. Harmonized system of quality assessment for electronic components: sectional specification: radio frequency coaxial connectors, series BNC. (30th September 1981) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (4 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
547. Detail specification for microswitches (sensitive switches). 30 mm nominal body dimension, plunger actuated. Assessment levels as in individual detail specifications. (15th November 1973) 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) ↗
548. Code of practice for the use of semiconductor devices. Particular considerations Part 2, (11th October 1973) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (27 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
549. Specification for metallic slide fasteners for aeronautical purposes. (11th December 1964) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (7 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
550. Recommendations for the presentation of tables, graphs and charts. (31st March 1977) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (16 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗