'Wellcome' Photographic Exposure Calculator Handbook & Diary (United States of America and Tropics)

P.L.R. copy.

Light table for the Tropics, suitable for use in the Tropics, i.e. between about 20 N. and 20 S. latitude, all the year round.. the countries for which the above light table is suitable include INDIA, CEYLON, BURMA, SIAM, COCHIN CHINA, CAMBODIA, MALAY PENINSULA, SUMATRA, JAVA, BORNEO and the STRAITS SETTLEMENTS, THE PHILIPPINES, FIJI ISLANDS, NORTH AUSTRALIA, POLYNESIA AND THE HAWAIIAN ISLANDS.

CENTRAL AMERICA, WEST INDIES, VENEZUELA, COLUMBIA, GUIANA, ECUADOR, BRAZIL, PERU, AND BOLIVIA. CENTRAL AFRICA, INCLUDING THE SUDAN AND ALL PORTIONS OF THE CONTINENT SOUTH OF EGYPT AND NORTH OF THE TRANSVAAL. SOUTHERN ARABIA, ZANZIBAR AND MADAGASCAR.

Includes bookmark 'Tabloid' 'Hazeline Snow' and 'Sketofax', several photographic images produced with 'Tabloid' brand photographic chemicals throughout, Index (of photographic chemicals), temperature chart, (guide for photographic operations), Customs regulations, weights and measures, illustrations, Development (information on 'Tabloid' developers and methods) list of 'Tabloid' brand Photographic Chemicals, 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. N.B. includes monthly light tables for the Northern Hemisphere. "calculated for 40° and for 30° North Latitude and are approximately correct for north and south respectively of the 35th parallel. These latitudes may be taken to correspond to the several states and Territories listed in the diary for : 40°, 30°, 30°, 60°, 55°, 52°. Several 'Tabloid' brand Photographic Chemical advertisements included in the diary. On back endpaper is a Wellcome's Exposure Calculator (for measuring the correct exposure by turning of the disc).

1934

1 diary Bound wallet style in red cloth buckram with gold tooling, endpapers printed. Text block machine made paper.

Copyright assigned to the Wellcome Trust