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)
an inch, or any other space, and may represent aninch, foot, yard, fathom, mile, or degree, or any otherquantity. 3rd. The measure which the scale is intended torepresent, is called the unit of measurement. In archi-tectural or mechanical drawings, the unit of measure-ment is generally a foot,… … n~ III I I I I ~~T~ I llllllllll r 1 \o s\o 7\o e\o 5\o A\i) 3\o 2\o i\o I R
