51. Methods of test for paints. Optical tests on paint films. Determination of colour and colour difference: measurement Part D9, (31st October 1986) 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) ↗
52. Ophthalmic optics. Spectacle lenses. Short wavelength visible solar radiation and the eye. (28th September 2018) 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) ↗
53. Ophthalmic optics. Spectacle lenses. Vocabulary. (15th August 1999) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (74 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
54. Optics and optical instruments. Preparation of drawings for optical elements and systems. Surface texture Part 8, (15th February 1998) 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) ↗
55. Optics and photonics. Measurement of reflectance of plane surfaces and transmittance of plane parallel elements. (6th April 2021) 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) ↗
56. Optics and photonics. Preparation of drawings for optical elements and systems. Surface texture Part 8, (22nd November 2019) 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) ↗
57. Paints and varnishes. Comparison of contrast ratio (hiding power) of paints of the same type and colour. (31st January 2007) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
58. Paper and board. Determination of colour by diffuse reflectance. Indoor daylight conditions (C/2°) Part 1, (31st August 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (22 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
59. Paper and board. Determination of colour by diffuse reflectance. Indoor illumination conditions (D50/2°) Part 3, (15th August 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (22 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
60. Paper and board. Determination of colour by diffuse reflectance. Outdoor daylight conditions (D65/10°) Part 2, (31st August 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (22 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗