The practical draughtsman's book of industrial design, and machinist's and engineer's drawing companion: forming a complete course of mechanical, engineering, and architectural drawing (1854)
Armengaud, aîné (Jacques-Eugène), 1810-1891, Armengaud, Charles A., 1813-1893, Amouroux, Jules, Cory, William Johnson, 1823-1892 · New York, Stringer & Townsend · leaf 313
by scale and multiplication. Mr. Miller of Woolwich has devised a very useful modificationof the common jointed rule. This instrument is termed a radiator, and our engraving, fig. 36, represents a portion ofit in plan, whilst fig. 37 is an end elevation. The inner edges ofthe legs are used as… … < with sockets, which admit of any length of ruler being used.The radiator is applicable to the following purposes :— For drawing lines in perspective, or geometrical drawing, to apoint or centre; for setting off angles as a protractor; for a right-angled triangle, or any other angles ; and for…
Decorative arts · Drawing
Internet Archive · Clark Art Institute Library · Public Domain Mark 1.0. Free to use for anything.
