Finch, James Kip, 1883- · New York : John Wiley & Sons, Inc. · leaf 152
the varia-tion in the thickness of the line used which, together with therough indication of foreground objects, gives the effect ofdistance. EXERCISES 1. Copy Fig. 71. 2. Draw the required number of vertical lines one inch apart and horizontal lines at half this distance and enlarge Fig. 74 by the… … Fig. 75.—The Sketching Screen. beginner. It consists of a rectangular frame, as shown inFig. 75, fastened to one end of a horizontal bar, the entireapparatus being mounted on a tripod. A series of verticaland horizontal cords divide the opening in the frame intorectangles. When this apparatus is…
Cartography · Military maps
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