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 136
rts, and open them till the otherpoint reaches the division 6 of the secondary divisions. Peoblem 157. To construct a scale of yy, or 1 inch to equal 3 feet Fig. 240. Number of feet to be represented may be assumed atpleasure, say 18 feet. 36 : 18 : : 12 : x, whence x = = 6 inches. 36 Draw a line 6… … CO — •-3 ii6 PRACTICAL PLANE GEOMETRY chap. At the end of the first division mark the zero point, andfrom this point towards the right figure the primary divisions1, 2, 3, etc. : these will represent feet. To the left of the zeropoint mark off twelve divisions : these will represent inches. In this…
Geometrical drawing
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