531. Elements of electrical and optical connection. Test methods. Electrical continuity at microvolt level Part B3, (15th February 1994) 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) ↗
532. Gas welding equipment. Rubber hoses for welding, cutting and allied processes. (15th December 1994) 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) ↗
533. Specification for electroacoustics. Instruments for the measurement of sound intensity. Measurement with pairs of pressure sensing microphones. (15th April 1994) 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) ↗
534. Specification for loaded printed wire boards (conformal coatings). Definitions, classification and general requirements Part 1, (15th March 1995) 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) ↗
535. Electromagnetic compatibility. Basic immunity standard. Conducted disturbances induced by radio-frequency fields. Immunity test. (15th April 1994) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (40 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
536. Intrinsically safe power supplies for use in coal mines. Specification for a.c. power supplies Part 2, (30th September 1982) 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) ↗
537. Information technology. 8 mm wide magnetic tape cartridge dual azimuth format for information interchange. Helical scan recording. (15th June 1994) 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) ↗
538. Guide to test methods for batch furnaces with metallic heating resistors. (15th August 1994) 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) ↗
539. Specification for flameproof transformers for use in mines. (31st July 1985) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (18 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
540. Intriniscally safe power supplies for use in coal mines. Specification for d.c. power supplies Part 1, (15th March 1994) 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) ↗