An old victorian optical device -what is it called?

Question

I used to know this and have forgotten. It has a mirror and a magnifying lens at an angle to each other. You put a scenic image such as a painting under the mirror and look at it through the lens and supposedly you see the illusion of depth.

Answer 1

I believe you are describing a stereopticon, more information can be found here...

http://www.stereopticonpictures.com/

additional

in that case could it be a 'zograscope', information can be found here....

http://www.worldwidewords.org/weirdwords...