The Arc Diameter command measures an existing arc/circle and draws the arc/circle label indicates the and the coordinates arc/ center point You can take this measurement only for an arc/circle that already exists in the model itself.Glen: How does SpinFire determine what is selectable? For example, in the example shown, the ends of the small tubular shapes are not selectable.The Arc Radius command measures an existing arc/circle and draws the arc/circle label indicates the radius and the coordinates arc/circle center point. You can take this measurement only for an arc/cicle that already exists in the model itselfThe Circle by Three Points command draws a measures diameter This command draws a visible diameter that passes label also X, Y, and Z center point
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