Engineering Drawing
This is the total amount that the feature on the actual part is allowed to vary from what is specified by the dimension:

Specification
Allowance
Difference
Tolerance

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Engineering Drawing
When using the direct entry method to create a horizontal line exactly three inches long the drafter should ________ first.

Insure that Ortho is on
Enter 3 for the length of the line
Read the coordinate position on the Dynamic Readout
Pull the line from away from the starting point very carefully

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