Details
A 19th-Century lacquered-brass direct vision spectroscope,
signed John Browning, London, the lacquered-brass body with adjustable eyepiece and screw-adjustable slit, dismantling into three sections to be contained in the original plush-lined mahogany case -- 7.5/8in. (19.4cm.) wide
signed John Browning, London, the lacquered-brass body with adjustable eyepiece and screw-adjustable slit, dismantling into three sections to be contained in the original plush-lined mahogany case -- 7.5/8in. (19.4cm.) wide