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 30
the direc-tion of c. Upon g for a centre sweep thecircle, as shown. Then draw a straight linefrom where the circle touches the lower edgeof the board, through the centre g, cuttingthe circle at d. Then a line from h throughd, will be perfectly square from the loweredge of the board. This is a very… … Let a o (Fig. 15) be the length of aside of the proposed square ; upon a and b,with the whole length for the radius, sweepthe parts of circles a d and b c. Find halfthe distance from a to e at f / then upon efor a centre sweep the circle cutting f Drawthe lines from a and b, through where…
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-96-191.webp)
