1. Methods for testing the accuracy of machine tools. (1st April 1974) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (41 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Specification for spirit levels for use in precision engineering. (22nd March 1968) 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) ↗