Engineering Drawing
This practice considers an individual part's dimensions and tolerances and that part's relation to its related parts:

Angular dimensioning tolerances
Creating datum references
Geometric dimensioning and tolerancing
Applying allowances

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Engineering Drawing
How can the drafter prevent Auto-CAD from placing or stacking another center mark on a circle when adding a diameter dimension to it?

Use the trim tool to take away the stacked center mark
It can't be done
Use the Properties dialog box to turn off the center mark of the dimension
Explode the dimension and then erase the center mark

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