Vintage Photography 1951 Sylvania Flash Slide-A-Guide Photo Exposure Slide Rule - $2 - (Pendergrass, GA)
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Posted 1 month ago
Vintage Photography 1951 Sylvania Flash Slide-A-Guide Photo Exposure Slide Rule *Flash guide for selecting aperture settings for multiple film types, speeds, bulb types, and distances from subject.*One side of the internal slider has black and white and color settings.*Back has a ruler in inches and mm.*And the price was only 10 cents in 1951!
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From ebay.com - 1 month ago