拍品 3
3
A mahogany-body zograscope with 5 inch diameter magnifying lens and a 10 x 8 inch mirror each in a mahogany frame with decorative inlay, brass fittings, on an extending turned mahogany stand.

細節
A mahogany-body zograscope with 5 inch diameter magnifying lens and a 10 x 8 inch mirror each in a mahogany frame with decorative inlay, brass fittings, on an extending turned mahogany stand.
出版
Mills, 'The optical diagonal machine or zograscope' in Bulletin of the Scientific Instrument Society No. 28 (1991), p.18-19.
更多詳情
See illustration