Instrument for perspective drawing Product:Framed picture 1867' Photographic plate 10 from

1867' Photographic plate 10 from Plans and photographs of Stonehenge

modern scientific names: Coccyzus americanus

leaving Louis to run the company alone

Inscribed in pencil lower left '1775' and lower right '1/-'

Instrument for perspective drawing Product:Framed picture 1867' Photographic plate 10 fromPlate 13 figure 1 from the paper 'Sketches and descriptions of three simple instruments for drawing architecture and machinery in perspective', by James Peacock, Philosophical Transactions of the Royal Society, vol. 75 (1785), pp. 366 371. Instrument designed to prick holes in paper to coincide with points and angles on an original object being drawn. The instrument also enables the user to draw resulting perpendicular lines using a steel slider.