1. Ribbons and spools used on office machines and data processing equipment. Widths of one-time paper or plastic printing ribbons up to 19 mm wide and marking to indicate the end of the ribbons Part 3, (31st October 1977) 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) ↗