21. Printed boards and assemblies. Design and use. Generic requirements. Generic requirements. Controlled impedance Part 1-2, (15th December 1998) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (38 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
22. Optics and optical instruments. Contact lenses. Determination of inclusions and surface imperfections for rigid contact lenses. (15th September 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) ↗
23. Founding. Visual examination of surface discontinuities. Steel sand castings. (15th September 1998) 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) ↗
24. Quantitative micrographic methods to determine the percentage content of non-metallic inclusions in cast steel. (15th August 1998) 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) ↗
25. Specification for design and manufacture of water-tube steam generating plant (including superheaters, reheaters and steel tube economizers). (15th January 1998) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (222 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
26. Specification for gloves and mitts of insulating material for live working. (15th April 1993) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (62 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
27. Welding and allied processes. Classification of geometric imperfections in metallic materials. Fusion welding Part 1, (15th December 1998) 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) ↗
28. Printed board assemblies. Sectional specification. Requirements for terminal soldered assemblies Part 4, (15th January 1999) 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. Harmonized system of quality assessment for electronic components. Capability detail specification: single and double-sided printed boards with plated through holes. (15th June 1998) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (32 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
30. Harmonized system of quality assessment for electronic components. Capability detail specification: multilayer printed boards. (15th April 1996) 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) ↗