'Avo' photoelectric exposure calculator

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'Avo' photoelectric exposure calculator patented by the
Science Museum Group Collection
© The Board of Trustees of the Science Museum

'Avo' photoelectric exposure calculator patented by the Automatic Coil Winder and Electrical Equipment Co. Ltd in 1935.

Details

Category:: Photographic Technology

Object Number:: Y4000.607

Measurements:: Overall: 30 mm x 60 mm x 70 mm,

type:: exposure calculator

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'Avo' photoelectric exposure calculator

Details

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