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A text book of geometrical drawing, for the use of mechanics and schools, in which the definitions and rules of geometry are familiarly explained (1849)

Minifie, William, 1805-1880 · Baltimore, W. Minifie & co. · leaf 111

An illustration from A text book of geometrical drawing, for the use of mechanics and schools, in which the definitions and rules of geometry are familiarly explained, 1849, leaf 111 — \ J-: ]• G Fig. J. Fig. 4. K … PLATE XXIV. 55 4th. The crown of an arch is the highest pointy as D.5th. VoussoiRS is the name given to the stones forming the arch.6th. The keystone is the centre or uppermost voussoir D^ socalled^ because it is the last stone set^ and wedges or keys thewliole together. Keystones are frequently…

Mechanical drawing · Geometry, Descriptive · Perspective

Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.

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