ICI geometric grey scale for assessing the effect on the pattern in dye fastness testing ICI geometric grey scale
ICI geometeric grey scale for determining the degree of staining in dye fastness testing ICI geometric grey scale
Made for Rank Film Laboratories Ltd. By donor, who specialised in this work. Folder with 7 step grey scale, light grey patch and 18% reflectance patch. Grey scale and standard grey patch
Made for BBC Televsion Film Studios, Ealing, by doonor, who specialised in this work. Folder with 7 step grey scale (Ref. white 60%, 36%, 22%, 13%, 8%, 5% refelctance), light grey and dark grey patches. Grey scale and standard grey patch
Made for Humphries Film Laboratories by donor, who specialised in this work. Folder with 7 step grey scael, 18% reflectance patch and light grey patch. Grey scale and standard grey patch
