Question

Conclusion 1. why do engineers place tolerances on dimensions? 2. what are the three types of tolerances that appear on dimensioned drawings? 3. what is the difference between a general and a specific tolerance, and how can you tell the difference on a drawing?

Answer 1

Tolerance enables the engineer to be informed when somethings requires replacement or if there is a drawback with too much war.

 

The three types of tolerances that appear on dimensioned drawings are limit, bilateral, and unilateral.

 

General tolerances are normally found in the information blocks of the blueprint while a specific tolerance is noted for certain areas of the blueprint.