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 (1866)
Armengaud, Charles A., 1813-1893, Armengaud, Charles, 1813-1893, [from old catalog] joint author, Amouroux, Jules, [from old catalog] joint author, Johnson, William, 1823-1864. [from old catalog] · Philadelphia, H. C. Baird · leaf 203
ilication. Mr. Miller, of AVoolwich, has devised a very useful modifica-tion of the common jointed rule. This instrument is termed aradiator, and our engraving, fig. 3(i, represents a portion ofit in plan, whilst fig. 37 is an end elevation. The inner edges ofthe legs are used as rulers, and the… … < 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 aright-angled triangle, or any other angles ; and for…
Mechanical drawing
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