641. Method of test for the resistance to freezing of gas-fired instantaneous water heaters. (31st January 1983) 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) ↗
642. Specification for underground plug cocks for cold water services. (28th September 1979) 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) ↗
643. Specification for transportable acetylene containers. (30th April 1981) 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) ↗
644. Safety valves. Specification for safety valves for process fluids Part 3, (29th June 1984) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (56 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
645. Specification for a.c. and d.c. rotary and linear actuators for aircraft. (14th April 1965) 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) ↗
646. Specification for transformer rectifier units. (31st March 1970) 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) ↗
647. Specification for cartridge fuses for aircraft. General requirements Part 1, (6th May 1960) 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) ↗
648. Specification for a.c. generators for aircraft. Variable frequency Part 2, (30th December 1966) 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) ↗
649. Specification for electro-magnetic indicators for extra low voltage aircraft systems. (6th September 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) ↗
650. Specification for d.c. generators. (23rd October 1970) 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) ↗