21. Methods of measurement for waveguides. Return loss on waveguide and waveguide assemblies Part 6, (15th December 1997) 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) ↗
22. Methods of testing vitreous enamel finishes. Determination of resistance to sulphuric acid at room temperature Part 3, (29th February 1988) 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) ↗
23. Optics and photonics. Test method for total scattering by optical components. (17th June 2022) 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) ↗
24. Paper and board. Determination of opacity (paper backing). Diffuse reflectance method. (15th November 1998) 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) ↗
25. Photography. Density measurements. Geometric conditions for reflection density Part 4, (15th September 1995) 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) ↗
26. Photography. Photographic reflection prints. Evaluation of glossiness Part 3, (16th June 2023) 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) ↗
27. Pulps. Estimation of dirt and shives. Inspection by reflected light Part 3, (15th April 1998) 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) ↗
28. Radio-frequency connectors. Electrical test methods. Voltage standing wave ratio, return loss and reflection coefficient Part 1-4, (1st October 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) ↗
29. Reflections on OEM in 2016. Issue 1 (14th December 2016) Authors: Sim, Malcolm Ross Journal: Occupational and environmental medicine Issue: Volume 74:Issue 1(2017) Page Start: 1 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
30. Road lighting. Code of practice for lighting for motorways Part 10, (15th August 1992) 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) ↗