Drafting Tools and Instruments

• Technical Drafting 


  It is the process of creating detailed and accurate drawings or plans that convey technical information for the design construction or manufacturing of various objects or structures.
• what is the primary purpose of technical drafting?

  To translate design concepts, specifications, or ideas into visual presentations
• Drawing Pencils


  One of the most important tools and it comes in various grades.
• 3 Types of Pencils

  1. Hard Pencil
  2. Medium Pencil
  3. Soft Pencil
• Hard Pencil


  Extreme accuracy is required on graphs diagrams and charts (soft)
• Medium Pencils


  General purpose work in drawing
• Soft Pencil


  Useful for artwork of various kinds (dark)
• Masking Tape


  Used to fasten the drawing paper on the drawing table
• Pencil Sharpener


  Used to sharpen the pencil
• Eraser


  Used to clean the dirt off the drawing
• Soft Eraser


  used to remove smudges and pencil marks (pencils only)
• Hard Eraser


  Used in making changes and correcting errors in the drawing (pencils and inks)
• Triangular Scale 


  Use when reproducing a drawing in an enlarged or reduced form.
• Drawing Papers


  Papers that made specifically for making technical drawings.
• T-Square


  Used for making horizontal lines only, and used for guiding triangles when making vertical lines
• Triangles


  three sided rulers used to draw vertical lines with help of t-square and inclined lines/ oblique lines with specific angles
• Two types of Triangles:

  1. 45 x 45 degree triangle
  2. 30 x 60 degree triangle
• Protractor

  • A semi circular instrument divided into 180 equal parts each of which is called a degree.
  • Used to determine the gradation of degrees when measuring arcs, circles or angles.
• Ruler 


  Sometimes called a rule or line gauge
• Ruler

  • 6-12 inches
  • Used for measuring distances or to rule straight lines only
• Drawing table / Board


  This is where you attach the drawing paper when working
• Drafting templates / Drafting Stencil


  This allows you to draw specific symbols and shapes that are repeatedly used in a design.
• Compass


  Use when drawing arcs and circles.
• Push-pull Rule


  A measuring tape that coils into a compact case, used for measuring long, short and straight lines.