Absolute Arm does not compensate probe tip diameter

Doesn't the Demon use the tip vector of the arm to compensate if you don't have CAD? So unless you are "pointing" at the hit then it can move the wrong direction? 
Not gonna lie, its been ages since I messed around without CAD on the arm. 

for 3D features it will compensate for the probe correctly, as long as you measure them correctly (3 sample hits for holes, correct workplane OR feature instead of workplane for a line, etc.) but for single points, just touch & pull the trigger, it uses the probe vector for probe compensation.  There is a reason that VECTOR point is not available on the Pcdmis Portable version of the software, only SURFACE point.  However, if you take the sample hits away from a surface point, it is the same as a vector point.

for 3D features it will compensate for the probe correctly, as long as you measure them correctly (3 sample hits for holes, correct workplane OR feature instead of workplane for a line, etc.) but for single points, just touch & pull the trigger, it uses the probe vector for probe compensation.  There is a reason that VECTOR point is not available on the Pcdmis Portable version of the software, only SURFACE point.  However, if you take the sample hits away from a surface point, it is the same as a vector point.

Yes, that's right, its all coming back to me now! 

Mathew, applying 3-2-1 alignment without CAD, the plane as datum Z Level and z origin.  The alignment is correct, the problem is to check out if I touch the probe on the plane, it shows z on Probe readout as dimension as haft of the probe tip diameter in z, it is supposed to be 0, correct?

Isn't that exactly what it should say unless you measure something? T-Value will compensate the value only because it has a CAD model.

That's correct , Thanks ArkansasBeeper