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A text book of geometrical drawing : abridged from the octavo edition : for the use of schools in which the definitions and rules of geometry are familiarly explained, the practical problems are arranged from the most simple to the more complex, and in their description technicalities are avoided as much as possible : with an introduction to isometrical drawing : and an essay on linear perspective and shadows ... (1849)

Minifie, William, 1805-1880 · Baltimore : Wm. Minifie & Co. · leaf 72

An illustration from A text book of geometrical drawing : abridged from the octavo edition : for the use of schools in which the definitions and rules of geometry are familiarly explained, the practical problems are arranged from the most simple to the more complex, and in their description technicalities are avoided as much as possible : with an introduction to isometrical drawing : and an essay on linear perspective and shadows ..., 1849, leaf 72
centre of the crown of the arch. 1st. Make a triangle with its longest side equal tothe chord or span of the arch and its height equal toone-half the rise. 2nd. Stick a nad at A and at C, place the triangle asin the diagram and move it round against the nails to-ward jij a pencil kept at the apex… … Fuj.4. J. 1 Z 3 4 5 C _;f^^-f f ^ 1^ ,E

Mechanical drawing · Geometry, Descriptive · Perspective

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