General Principles & Basic Conventions

• The essential foundation skills
• Correct engineering drawing requires the use of different line types and styles to represent different elements of the finished product, and to avoid confusion in interpretation
• Producing lines via CAD systems

Lettering & Scales

• The importance of lettering, & different text styles
• How to use BS8888 standard for preferred scale factors when converting full-size CAD drawings to scale factor plots

Projection Methods

• Understanding the choice between first and third angle projections

Screw Threads

• Some 3D modelling systems have the ability to
  show screw threads in a graphical form, however
  2D drawings do not require this level of details
• Examines how to represent both internal and external screw threads
• Welding symbols

Dimensioning

• When to add tolerances & why needed
• How to check that tolerances are correct

Surface Texture

• When machining components, the surface finish
  will be important to the end user, and this section examines how to state and interpret different types of surface finish