I don't know the diameter of the reference probe, and I don't know if you can use it to measure parts.
The single point circle use a probe which have a diameter bigger than the circle to be measured.
If there's no reference plane, the easiest way to calculate the vector is using 2 different balls, larger than the hole, and take a point by centering the ball in the hole, without ball compensation (center ball)
Then, the line through both points is the vector of a "tangent" plane to the circle.
Here is a little trig explaining the calculation...
Not absolutely sure of it, it's late here...
I don't know the diameter of the reference probe, and I don't know if you can use it to measure parts.
The single point circle use a probe which have a diameter bigger than the circle to be measured.
If there's no reference plane, the easiest way to calculate the vector is using 2 different balls, larger than the hole, and take a point by centering the ball in the hole, without ball compensation (center ball)
Then, the line through both points is the vector of a "tangent" plane to the circle.
Here is a little trig explaining the calculation...
Not absolutely sure of it, it's late here...
