Camera Lucida

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“An optical instrument employed to facilitate the sketching of objects from nature by producing a reflected picture of them upon paper. Wollaston’s apparatus is one of the commonest. The essential part is a totally-reflecting prism with four angles, one of which is 90 degrees, the opposite one 135 degrees, and the other two each 67 degrees. One of the two faces which contain the right angle is turned towards the object to be sketched.” — Winston’s Encyclopedia, 1919


Editor in Chief Charles Morris Winston's Cumulative Loose-Leaf Encyclopedia (Philadelphia, PA: The John C. Winston Company, 1918)


TIFF (full resolution)

2400×1596, 484.2 KiB

Large GIF

1024×680, 56.8 KiB

Medium GIF

640×425, 28.4 KiB

Small GIF

320×212, 9.8 KiB