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The Pigeon-Cantonnet Stereoscope
ORTHOPTIC INSTRUMENTS
stereoscope; home trainer
Mid 20th c.
cardboard
1999.2807
ORTHOPTIC INSTRUMENTS
stereoscope; home trainer
Mid 20th c.
cardboard
Folding optometric device in black cardboard consisting of two outer flaps bearing scales and a pointed central flap held upright by a cord and containing a covered mirror. Supplementary metal clip to hold card against scale.
1999.2807