Rogers' drawing and design; an educational treatise relating to linear drawing; machine design; working drawings; transmission methods; steam, electrical and metal working machines and parts; lathes; boiler and parts; instruments and their use; tables, etc (1913)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 55
op view,abed, the rays of light fall upon the rear side ofthe object, b c, upon the top, abed, and upon theleft side, a b ; the light does not reach the front andright sides, a d, and, d c ; hence they are dark sur-faces ; the edges a d and d c, separating the lightsurface, abed, from the dark… … Fig. 113. ROGERS DRAWING AND DESIGN. 67 Figs. ii6 and 117 represent a hollow square- b prism ; its top view shows the shade lines a d andd c, that is, the right and bottom sides of the view c upon which the rays of light do not fall ; the lines b a d f ? u Fig. U4. a A f Fui. 116. 9 i : m 0 ^ m r 8…
Mechanical drawing · Machine design
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