The mechanic's text-book and engineer's practical guide; containing a concise treatise on the nature and application of mechanical forces; action of gravity; the elements of machinery; rules and tables for calculating the working effects of machinery; of the strength, resistance, and pressure of materials; with tables of the weight and cohesive strength of iron and other metals (1866)
s a pencil,) move thetriangle along the pins as guides ; and the tracer willdescribe the arc required. 11. Or otherwise. Draw the chord A C B; also draw the line H DI, parallel with thechord, and equal tothe height of thesegment; bisect thechord in C, anderect the perpen-dicular C D ; join A D, D B… … number of equal parts; draw the lines 1 1, 2 2, 3 3,&c.; likewise divide the lines A n, B n, each into halfthe number of equal parts ; draw lines to D from eachdivision in the lines An,B n, and, through where theyintersect the former lines, describe a curve, which willbe the arc or segment…
Mechanical engineering
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![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-101-224.webp)
