21. Ophthalmic optics. Spectacle lenses. Short wavelength visible solar radiation and the eye. (28th September 2018) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (36 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
22. Ophthalmic optics. Spectacle lenses. Vocabulary. (15th August 1999) 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) ↗
23. Optics and optical instruments. Preparation of drawings for optical elements and systems. Surface form tolerances Part 5, (15th July 1996) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (24 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
24. Orthopaedic joint prostheses. Specification for articulating surfaces made of metallic, ceramic and plastics materials of hip joint prostheses Part 4, (15th May 1997) 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. Pneumatic fluid power. Cylinders, 1000 kPa (10 bar) series. Rod end spherical eyes. Mounting dimensions. (15th November 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) ↗
26. Rolling bearings. Bearings with spherical outside surface and extended inner ring width. Specification for characteristics, dimensions and bore tolerances Part 1, (28th November 1980) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (9 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
27. Rolling bearings. Bearings with spherical outside surface and extended inner ring width. Specification for dimensions and tolerances of eccentric locking collars Part 2, (28th November 1980) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (6 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
28. Rolling bearings. Bearings with spherical outside surface and extended inner ring width. Specification for insert bearings and eccentric locking collars Part 4, (15th August 1993) 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) ↗
29. Specification for bearings - spherical plain in corrosion resisting steel with self-lubricating liner. Normal series. Dimensions and loads. (29th September 1989) 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) ↗
30. Specification for bearings-spherical plain in corrosion resisting steel without assembly slot. Dimensions and loads. (28th September 1990) 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) ↗