1. Ophthalmic optics and instruments. Optical and electro-optical devices for enhancing low vision. (15th July 2021) 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) ↗
2. Non-destructive testing. Aids to visual inspection. Selection of low-power magnifiers. (15th May 1998) 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) ↗
3. Guide to the selection of low-power magnifiers used for visual inspection. (31st December 1974) 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) ↗
4. BS EN ISO 15253. Ophthalmic optics and instruments. Optical and electro-optical devices for enhancing low vision. (7th October 2020) 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) ↗