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pseudoscope

[soo-duh-skohp]

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noun

an optical instrument for producing an image in which the depth or relief of an object is reversed.

Compare stereoscope.

Origin of pseudoscope

First recorded in 1850–55; pseudo- + -scope

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for pseudoscope

Historical Examples of pseudoscope

Of course in this practical age the inquiry is put—Of what use is the stereoscope or pseudoscope?
Chambers's Edinburgh Journal, No. 426
Various
The pseudoscope which produces effects opposite to those of the stereoscope is an interesting device.
Visual Illusions
Matthew Luckiesh