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 40
To draw an octagon on a given line : Let AB be the given line, Fig. 94. At the points A and B draw lines at angles of 45 degrees to the criven line, AC, in one direction, and BH in the other direction. Make AC and BH each equal to the line AB. Through C draw the line CF parallel toBH and through H… … Fig. 94. at D and the line HG cutting the line AG at G.Through D draw the line DE parallel to CF andcutting EH at E ; then draw through G the lineGF parallel to EH and cutting CF at F. Join EFand ACDEFGHBis the required octagon. 52 ROGERS DRAWING AND DESIGN. ALPHA BETA ANTiqVA 2rasE5?;Siso
Mechanical drawing · Machine design
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
