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This book makes possible the accurate geometrical solution of all problems of pattern development normally encountered, by giving examples arranged according to a systematic plan which progressively illustrates the underlying principles. In the five "courses" into which the book is divided, the three basic methods of Radial Line, Parallel Line and Triangulation are applied in more and more complex examples, culminating in the solution of difficult problems of pipe intersection, twisted surfaces and spiral chutes. Each stage in the solution of the problem is clearly explained and shown in detailed drawings, and the superiority of the accurate geometrical method, in terms of time and material saved, is effectively demonstrated. All sheet metal workers will find this book invaluable.

The only drawback with this book, is that for the price you would really have wished for a larger format.

Table Of Contents

• 1. Classification of Geometrical Forms
• First Course
  • 2. The Radial Line Method
  • 3. The Parallel Line Method
  • 4. The Method of Triangulation
• Second Course
  • 5. The Radial Line Method
  • 6. The Parallel Line Method
  • 7. Triangulation
• Third Course
  • 8. The Radial Line Method
  • 9. The Parallel Line Method
  • 10. Triangulation
• Fourth Course
  • 11. Method of Cutting Plans
  • 12. Branch ad Junction Pieces
  • 13. The Tapered Lobster-Back
  • 14. Unusual Problems
• Fifth Course
  • 15. Double Projection
  • 16. Twisted Surfaces
• Index

Code No. 006844, 325 pages, ISBN 0582009618, $180.00

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