This lesson will teach the student:
- To understand and know the difference between center line and base line referencing. This helps to figure sizes of molds.
- To be able to understand the standard, cumulative and reference tolerances. These can cause many problems if not correctly dealt with.
- Many tolerance symbols are used today such as flatness, position, etc. They are used to save time and space.
- To have some idea about the metric measurements. Today prints can be found in either format.
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