Smith, Leslie John, 1881- [from old catalog] · New York, The Macmillan company · leaf 17
o the lines represent-ing rectangular edges. The parallel lines of an object are shown parallel inisometric drawings instead of sUghtly converging as theydo in perspective drawings. On account of this fact, 6 ESSENTIALS IN MECHANICAL DRAWING isometric drawings of large objects do not look… … Figure 3. To get the angle of 30 degrees where no 30 degree tri-angle is to be had, use the protractor; or in case none isat hand, draw an equilateral triangle with one side verticalto an imaginary horizontal Hne; the other two sides willbe at an angle of 30 degrees with this line. One can buy pads…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
