Large Georgian Mahogany ZograscopeA fantastic Georgian period mahogany zograscope of large proportions, c. 1780 1800 The zograscope is an 18th century optical device that enhances the sense of depth in flat pictures to create a form of 'virtual reality'. The viewer would use specially prepared prints ('Vues D'Optique') which had strong architectural perspective for maximum effect. However the zograscope will create the '3D' effect with 2D standard prints that have a strong perspective