Wallis, Rolland S. [from old catalog], Iowa state college of agriculture and mechanic arts, Ames. Dept. of engineering extension. [from old catalog] · Ames, Iowa, Engineering extension department, Iowa state college · leaf 65
(Long diameter given) … (Short diameter given ) Fig. 85.—Construction of reguk (One side given) • hexagons. Method). Draw the line BC tangent to given arc AB at B. Drawthe chord AB, extending it one-half its length to D. With D as acenter and DA as a radius strike an arc to cut the tangent line at CThen BC is the required…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Divina proportione : opera a tutti glingegni perspicaci e curiosi necessaria oue ciascun studioso di philosophia: prospettiua pictura sculptura: architectura: musica: e altre mathematice: suavissima: sotile: e admirabile doctrina consequira: e delecterassi: co[n] varie questione de secretissima scientia (1509)](https://img.insideoutlibrary.com/img/200/ia-divinaproportion00paci-132-364.webp)
