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Essential Drafting Equipment for Drawings: Tools and Techniques

Chapter 3 covers essential drafting tools such as the drawing board, T-square, protractor, and compass. A drawing board serves as the foundational surface for attaching sheets. The T-square aids in creating horizontal lines and functions as a guide for other instruments, while protractors help in measuring angles. Additionally, tools like dividers and templates assist in precise measurement and shape creation. Proper care and safety measures for these instruments are crucial for effective drafting practice.

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Essential Drafting Equipment for Drawings: Tools and Techniques

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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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