Rogers' drawing and design; an educational treatise relating to linear drawing; machine design; working drawings; transmission methods; steam, electrical and metal working machines and parts; lathes; boiler and parts; instruments and their use; tables, etc (1913)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 35
6 By sliding the first triangle upon the second one,any number of lines may be drawn which will be atright angles to the given line. With a knowledge of the preceding rules a great … ROGERS DRAWING AND DESIGN. 47 variety of figures may be drawn. In the followingwe will show how a square, an equilateral triangle,a hexagon and an octagon may be drawn by thesesimple means.
Mechanical drawing · Machine design
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
