S/1887 Antique Treen Georgian Mahogany Zograscope
A good Georgian mahogany zograscope, having rope twist chequered inlay. The adustable hinged mirror and magnifying glass is on a turned knopped adjustable column, with a spreading circular foot. The whole has a good rich colour and retains a patination.
Zograscopes were invented circa 1750, and were intended for viewing prints and copper plate engravings when stood on a table, with the mirror correctly adjusted and the print placed on the table under the mirror. The viewer standing in front of the magnifying glass, sees the print magnified in the mirror, with a considerably stereoscopic effect, which brings out the perspective and the detail.
(ref: E H Pinto page 284)
10¼ in. (26 cm.) Wide
24½ in. (62.5 cm.) High
8 in. (20.5 cm.) Diameter English Circa 1800