Science and art drawing : complete geometrical course ; consisting of plane and solid geometry, orthographic and isometric projection, projection of shadow's the principles of map projection, graphic arithmetic and graphic statics (1895)
Spanton, J. Humphrey (John Humphrey) · London : Macmillan · leaf 147
Fi- 252. a given number of equal parts, but it can also be used forenlarging or reducing a drawing to a given scale. … Fig. 253. Let Fig. 253 represent a portion of the plan of a field whichwe wish to draw to an enlarged scale, say in the proportion of5 :3. First enlarge the triangle ABC. This can be done by draw-ing the line CE at right angles to AB, making DE equal to two-thirds of CD, and drawing FH through E…
Geometrical drawing
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