- 3-2-1 Principle ( Arresting Degrees of Freedom ) - New!
- Fits in Mechanical design - New!
- International Tolerance Grade - New!
- Projection methods: 1st angle and 3rd angle projections - New!
- Terminology and Terms in GD&T - Modifiers - Series 1 - New!
- Tolerance in Mechanical design - New!
- Virtual Condition & Resultant Condition - Holes & Pins - New!