Share 'Help identify this strange French optical viewer'
This is a device that is new to me, I don't even know what to call it. 6 x 6" box, it has a concave mirror and slots to fit photos. Not at all like a Graphoscope. You position yourself behind the photo and view the enlarged image in the mirror. Rather clever, as you can see both the front and back of a CDV at the same time.
Does anyone know what this is called?
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