Rare 19th Century Optician's Eye Test Chart

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Rare 19th Century Optician's Eye Test Chart

3,650.00

A rare 19th century optician's eye test chart, made by the Globe Optical Company, Boston, the rectangular black painted wooden box with decorative molding along the perimeter, a metal visor with light bulb at the center top, and a beveled edge around the rectangular opening from which is visible a canvas scroll printed with letters at various sizes, and the distance from which they should be read to determine vision correctness or loss. The white string on the upper right hand side controls the rolling canvas and operates the way a window shade does, with stops at each line of printed text. Wonderfully graphic and a rare survivor.

Height: 10” Width: 15” Depth: 8 1/4”

$3650

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