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 248
under efdge. This formation of the string board is certainly a very great improvement in stairrcasing,as it gives one universal curvature^ to the soffit, that is, without any breaking of surface so asto form an angle, as is the case with all stair-cases with winders when the ends of the stepsat the… … ib^ M FhiU 70.
Carpentry
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
