Image: Sketches and Descriptions of Three Simple Instruments for Drawing Architecture and Machinery in Perspective. By Mr. James Peacock; Communicated by Robert Mylne, Esq. F.R.S. (1785) (14774865111)

Description: Identifier: philtrans04725543 (find matches) Title: Sketches and Descriptions of Three Simple Instruments for Drawing Architecture and Machinery in Perspective. By Mr. James Peacock; Communicated by Robert Mylne, Esq. F.R.S. Year: 1785 (1780s) Authors: Peacock, J. Mylne, R. Subjects: Proceedings of the Royal Society of London Philosophical Transactions of the Royal Society Publisher: Royal Society of London View Book Page: Book Viewer About This Book: Catalog Entry View All Images: All Images From Book Click here to view book online to see this illustration in context in a browseable online version of this book. Text Appearing Before Image: Philos. Trans. Vol. LXXV. Tab ♦ XV. p.38/^, Text Appearing After Image: for drawing in VerjpeSlive. 37 the correfponding fide of the board on your defk or table, andraw the line of its precife length and pofition. N. B. If this is thought too operofe,^ the brafs groove anAiding pieces M, N, may be reje&ed, and the blade of ttfquare may be graduated on one or both of its edges at pleafureand all lines in the fame direction may be drawn thereby exa£llas to their pofitions, and nearly, though fomewhat exceedingtheir lengths * ;■ and their precife lengths may be determined<the fame time the lines in the contrary pofitions are drawrwhofe lengths will be given at the fame time by the lines firdrawn. * This will be effected, by noticing the numbers upon the blade, and takirthofe next beyond the apparent limits of the line j and by this means the drawirwill advance without the leail confuiion* Note About Images Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.
Title: Sketches and Descriptions of Three Simple Instruments for Drawing Architecture and Machinery in Perspective. By Mr. James Peacock; Communicated by Robert Mylne, Esq. F.R.S. (1785) (14774865111)
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