81. Tracked Changes. Eye and face protection for sports use. Requirements for eye protectors for squash and eye protectors for racquetball and squash 57 Part 2, (5th May 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (76 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
82. Eyewear display. Specifications Part 10, (19th September 2023) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (30 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
83. BS ISO 17328. Optics and photonics. Optical materials and components. Test method for refractive index of infrared optical materials. (8th January 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (23 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
84. BS EN ISO 12312-1. Eye and face protection. Sunglasses and related eyewear. Part 1. Sunglasses for general use (11th January 2021) 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) ↗
85. Ultrasonics. Transducers. Definitions and measurement methods regarding focusing for the transmitted fields. (10th February 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (118 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗