A 19th-Century brass mechanical saw,

细节
A 19th-Century brass mechanical saw,
signed CHARRIERE A PARIS, the short saw blade driven through a brass tube with removable ebony-handled grip, with blued-steel thumb screw to adjust cutting position, by a crank mechanism with ebony handle, enclosed in a brass housing, mounted on a chequer-grip ebony stock -- 10¾in. (27.5cm.) long

See Colour Plate 3