Text Books of Art Education; Book I- Volume 7

Text Books of Art Education; Book I- Volume 7

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 edition. Excerpt: ...not 2'-o," or 23" not 1'-11." "Degree" is also expressed by a symbol; thus, an angle of 45, means an angle of forty-five degrees. All lettering in working drawings should be carefully made with simple letters, such as are shown on page 65. Letters of the same style, but slanted from the vertical at an angle of twenty degrees, are also used with good effect. The problems which follow are to be worked out in order that you may acquire the geometric knowledge that is necessary in making working drawings and designs. Whenever it is possible, two methods will be given: one, the ordinary geometric method, requiring the use of the ruler and compasses; and the other, the more direct method which an architect or draughtsman would employ, using the T-square, the triangles, and the compasses. You are to work out these exercises in both ways, as directed in the problems. Problems in Industrial Drawing. Problem i--To Draw Straight Lines, Using the T-Square and the Triangles. (A) Horizontal Lines: Place the Tsquare against the left edge of the board, holding the head firmly in place. Draw the line against the blade. See the line DE, Figure 1. A horizontal line is a level line. (B) Vertical Lines: Hold the T-square as before, and place the triangle against the upper edge of the blade, as shown in Figure 2. Draw the line against the left edge of the triangle. See the line FG, Figure 2. A vertical line is an upright line. (C) Oblique Lines: Hold the T-square as before. Place the triangle as indicated in Figure 3. Draw the line against the slant edge. See the line HI, Figure 3. An oblique line is a slanting line. You see that a straight line may have any one of three directions. It may be horizontal, vertical, or oblique. Problem...show more

Product details

  • Paperback
  • 189 x 246 x 2mm | 68g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236570618
  • 9781236570611