Limomachia. : By His Majesty's royal letters patent, the new-invented machine for taking likenesses, by which the usual objections to the art, viz. time, trouble, and expence, are entirely removed, by Raphael Pinion, portrait-grinder, at his manufactory, in Liecester square, opposite the aequestrian statue of the KingPinion, Raphael[between 1780 and 1788?]engA man sits on the right of a tracing machine, his head caught in a vice; beside him sits an old woman. On the opposite end, a man in gown works the mechanismCaption title.Advertisement with an etching of the device in action above the caption title.Also advertised are "portraitures in worsted, human-hair, and hot-poker."