The carpenter's and joiner's hand-book: containing a complete treatise on framing hip and valley roofs. Together with much valuable instruction for all mechanics and amateurs, useful rules, tables, etc. ... Illustrated by thirty-seven engravings (1863)
Holly, H. W. (Henry Wells) · Norwich, Conn., Published by H. W. Holly · leaf 32
Fig. 16. Upon two points nearly opposite eachother, as a b (Fig. 16), draw the two partsof circles, cutting each other at c cl / repeatthe same at the points e f ; draw the twostraight lines intersecting at g, which willbe the centre required. HAND-BOOK. 20. Another method. 27 … Lay a square upon the circle (Fig. 17),with the corner just touching the outer edgeof the circle. Draw the line a h across thecircle where the outside edges of the squaretouch it. Then half the length of the line ao will be the centre required. ~No matterwhat is the position of the square, if the…
Carpentry
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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-100-222.webp)
