21. Method for estimating the average grain size of copper and copper alloys. (30th April 1991) 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) ↗
22. Notes of the use of Ringelmann and miniature smoke charts. The calibration of instruments in Ringelmann number. (27th June 1972) 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. Preferred numbers and preferred sizes (extracted from PD 6481:1977). (15th August 1977) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (2 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
24. Preparation of function charts for control systems. (15th November 1993) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (42 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
25. Recommendations for testing of aggregates. Compactibility test for graded aggregates Part 1, (30th June 1980) 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) ↗
26. Recommendations for the presentation of tables, graphs and charts. (31st March 1977) 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) ↗
27. Recommendations for the use of preferred numbers and preferred sizes. (30th June 1977) 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) ↗
28. Scales and sizes for plotting frequency characteristics and polar diagrams. (4th September 2020) 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. Spatial data-sets for geographical referencing. Specification for a Street Gazetteer Part 1, (15th June 1993) 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) ↗
30. Spatial data-sets for geographical referencing. Specification for a street gazetteer Part 1, (15th September 2000) 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) ↗