on the railroad and on a picket fence. 179. Fig. 26 is a drawing of three equal pulleys on a shaft. Note thedifference in the shapes of the ellipses. In a series of circles, the one whose plane is parallel to the line of sight appearsas a straight line, the one whose plane is perpendicular to the… … P£ffP£^a/Ciy^A^ TO 7-H£PfCTUf?£ Fl.QNE. LINEAR^ F£RSPECT/yeScale e j/^ch = I foor EYE. (H) Fig. 25. ■5/0£S CO/vy£/=7if£^ TO A Po/nr o/v THa Hof^iZ-ON
Mechanical drawing · Lettering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
