Engineering Drawing
Some traditional board drafters preferred the drafting machine over the parallel straight edge because it could be used without the need for_________.

Technical pens
Circle templates
Triangles
Lettering guides

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

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