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Chapter 3

Chapter 3. Board- Drafting Equipment. Drawing Board True Edge T- Square Protractor Scales Irregular Curve Template Vellum Case instruments Dividers Compass Media Minimal. Vocabulary. Is usually a large, flat board on which you attach a drawing sheet to make a drawing.

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Chapter 3

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  1. Chapter 3 Board- Drafting Equipment

  2. Drawing Board • True Edge • T- Square • Protractor • Scales • Irregular Curve • Template • Vellum • Case instruments • Dividers • Compass • Media • Minimal Vocabulary

  3. Is usually a large, flat board on which you attach a drawing sheet to make a drawing. Drawing Board/ Table

  4. T-square Used for horizontal lines & as a guide for other instruments

  5. Triangles Tool for drawing vertical & inclined lines 45° Triangle 30°-60° Triangle

  6. Protractor Used for drawing inclined lines & angles

  7. Compass Tool for drawing circles & arcs

  8. French Curve Also called an Irregular curve Consists of a variety of curves that can be used when arcs are not satisfactory

  9. Divider Looks like a compass, but both legs have steel pints at the end Tool used for measurement purposes

  10. Templates Used to help in drawing shapes & symbols Templates for producing squares, ellipses triangles, etc.

  11. Care of Tools Store in cabinet when not in use Do not cut against edge of plastic tools Keep wooden tools & boards clean Occasionally check t-squares for blade alignment

  12. Drawing Instrument Safety Pass, do not throw, tools Use tools with points, such as the compass & dividers, only as directed Use knives as directed & store them in proper containers

  13. The Architects Scale • The Mechanical Engineer’s Scale • The Civil Engineer’s Scale • The Decimal Inch Scale • Hand out SCALES

  14. Page 86 • Problems 1-3 • Page 87 • Problem 4 • Complete any drawings on Graph Paper (sketching) Assignment

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