The carpenter's new guide: being a complete book of lines for carpentry and joinery. Treating fully on practical geometry, soffits, brick and plaster groins ... with a great variety of designs for roofs, trussed girders ... with many other things entirely new: the whole founded on true geometrical principles; the theory and practice well explained and fully exemplified on eighty-four copper-plates; including some observations and calculations on the strength of timber (1830)
Nicholson, Peter, 1765-1844 · Philadelphia, J. Grigg · leaf 31
Fui.5.f ll O J / ^\J ,t/ ■\ ( ^ / \ \ yl \ /■ J / ^ ^~~~-T--— -— •^!^ … M PRACTICAL GEOMETRY. ir Fig. 5, To describe an Ellipsis hy Ordinates. Make a semicircle on the length a b, divide it into any number of equal parts, as 16, onthe end at a make a 8 perpendicular, equal to half the width, and draw the ordinates throughall the points in the semicircle, draw the line…
Carpentry
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