'Avo' photoelectric exposure calculator
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License'Avo' photoelectric exposure calculator patented by the
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© 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
