Wellington exposure disc calculator

Wellington exposure disc. Book type exposure calculator with exposure disc. Scales for: light Values 3/4-24; weather conditions sunshine-very dull; H & D speeds 6-400; subjects clouds - very dark interiors; apertures f/5.6-64; shutter speeds 3 hours - 1/350 sec. Manufactured by Wellington and Ward, Elstree, Herts.

Details

Category:
Photographic Technology
Collection:
Kodak Collection
Object Number:
1990-5036/1850
Materials:
cardboard, paper (fibre product) and metal (unknown)
Measurements:
overall: 200 mm x 90 mm x 5 mm,
type:
exposure calculator
credit:
The Kodak Collection at the National Media Museum, Bradford