Wellcome's Photographic Exposure Calculator Handbook and Diary (Northern Hemisphere and Tropics)

Working copy. Contents similar to Wellcome's Photographic Exposure Record and Diary, include Monthly Light Tables for the Northern Hemisphere calculated at 52° North Latitude, 'and are approximately correct for England, Ireland, Belgium, Holland, Germany, Southern Russia, Northern China, Newfoundland and Southern Canada.' Light Table for the Tropics is suitable for use in the Tropics, i.e. between about 20° S. and 20° N. latitude, all the year round.

Includes advertisements for 'Tabloid' photographic chemicals, postal information for the United Kingdom, temperature chart (guide for photographic operations), weights and measures, customs regulations, illustrations, Photographic Development (information on 'Tabloid' developers and methods) list of 'Tabloid' brand Photographic Chemicals, Permits, Record of negative exposures record of positive exposures, diary, week to a page, and memoranda pages with article on exposure and tables of light values follow memoranda pages.

NB there is no Wellcome's Exposure Calculator positioned on back endpaper as this was a working copy.

1925

1 diary Text block machine made paper.

Copyright assigned to the Wellcome Trust