Bell shaped handheld Brewster stereoscope in light wood. Most likely French, c.1850s. A simple wood handheld stereoscope that curves into the two lenses with no mirror on the interior of the flap. Long brass eyepieces.
Sir David Brewster (1781-1868) was a Scottish physicist who invented the kaleidoscope and this reflected light lens stereoscope. He also discovered the polarization phenomenon of reflected light.
This stereoscope is in working order. Some wear and superficial dents on surface, especially on top of the flap, and the eyepieces do not adjust, but overall in good and clean condition.
It measures 4 1/8 H x 8 3/4 W x 6 1/2" and weighs 13 1/2 oz.