31. Guide to smoke measurement units. Their basis and use in smoke opacity test methods. (15th January 1998) 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) ↗
32. Light and lighting. Measurement and presentation of photometric data of lamps and luminaires. Presentation of data for emergency lighting of workplaces Part 3, (23rd November 2021) 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) ↗
33. Light motorized vehicles for the transportation of persons and goods and related facilities and not subject to type-approval for on-road use. Personal light electric vehicles (PLEV). Requirements and test methods. (11th November 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (92 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
34. Light motorized vehicles for the transportation of persons and goods and related facilities and not subject to typeapproval for on-road use. Personal light electric vehicles (PLEV). Requirements and test methods. (27th October 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (86 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
35. Luminaires. Particular requirements. Luminaires for emergency lighting Part 2-22, (16th April 2020) 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) ↗
36. Luminaires. Particular requirements. Luminaires for emergency lighting Part 2-22, (26th September 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (50 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
37. Measurement of smoke density of cables burning under defined conditions. Test apparatus Part 1, (12th March 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (20 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
38. Measurement of smoke density of cables burning under defined conditions. Test procedure and requirements Part 2, (24th March 2020) 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) ↗
39. Measurement of smoke density of electric cables burning under defined conditions. Test apparatus Part 1, (15th February 1993) 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) ↗
40. Method of measurement of centre beam intensity and beam angle(s) of reflector lamps. (31st August 2011) 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) ↗