Chromatrope {??Wood-Framed} Mechanical Lantern Slide (Pulley Type), by Watkins & Hill, London, c.1850

Wood-framed lantern slide - a chromatrope with pulley mechanism. Two brass alloy pins hold the coloured glass discs in place. Two metal screws and a large bolt hold the handle in place. The pulley is made of string. On the reverse of the frame is handwritten Chromatrope Slide by Watkins and Hill pres. by F.A. Bellamy.