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 90
xternal angle at A by the line AH,and the external angle at B by the line BC. MakeAH and BC equal to AB. Draw HG and CD par-allel to AE and equal to AB. From G as center, with a radius equal to AB, cut the perpendicular AE at E, and from D as centerwith the same radius cut the perpendicular BE at… … o c Fig. 19S. Lengthen the line C5 to O. With C as centerand a radius equal to C5 describe the semicircleOI 2345, and divide this into as many equal parts asthere are sides in the required polygon. Join Cwith 2, 3, 4, etc., by straight lines. With 2 as acenter and a radius equal to C5 describe an…
Mechanical drawing · Machine design
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
