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Dimension arc length. to control min max arc.

Dimension arc length. to control min max arc.

Dimension arc length. to control min max arc.

(OP)
2005 sp0. When dimensioning points on an arc (rolled UB with holes in flange & cleats around arc, point on arc & hole centre line), most of the time I get the arc length dimension I want. Done by, Click on end point, click on 2nd point then click on arc. Sometimes I get the arc length around the opposite direction to the one I want. How do I control which way the arc goes ?  

RE: Dimension arc length. to control min max arc.

Have you tried making your second point click always counter-clockwise from your first point click?  I know the "centerpoint arc" command always goes CCW.  Positive angles are CCW in a right-hand coordinate system.

RE: Dimension arc length. to control min max arc.

(OP)
Tried both ways when it does not work? Can't work out why some will work on drawing then it won't?

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