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 18
e. A B is a line, and c a given point; take a and b, two equal distances on each side of c,and with the foot of the compasses in a and b make an intersection df and draw d c, which isthe perpendicular. * Fig. 2. To make a Perpendicular with a Ten Foot Rod. Let a 6 be six feet, then take eight feet,…
Carpentry
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
