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
Fig. 19K. From ABC and D as centers, with a radius AE,describe arcs cutting the sides at GH, etc. Jointhe points so found to complete the requiredoctagon. ROGERS DRAWING AND DESIGN. 103 To describe an octagon on a given litte, one side ofthe octagon being given. Let AB be the given side, Fig. 197.… … Fig. 197 Bisect the external 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…
Mechanical drawing · Machine design
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