拍品專文
Ross manufactured between 1831-1839 and 1843-1859 from five addresses in London, mostly in Clerkenwell
細節
A mid 19th-Century single draw telescope signed Ross; London
constructed in nickel-plated brass with a black leather covered body tube, dust slide to eye piece and shade slide to main lens; main lens -- 1.1/8in. (3cm.) dia; extended length -- 34in. (86.5cm.) with a board for wall mounting
See illustration
constructed in nickel-plated brass with a black leather covered body tube, dust slide to eye piece and shade slide to main lens; main lens -- 1.1/8in. (3cm.) dia; extended length -- 34in. (86.5cm.) with a board for wall mounting
See illustration
出版
Clifton, G: Directory of British Scientific Instrument Makers 1550-1851, Zwemmer 1995