Run out too far along the spine
The spine tapers into noise, and the eye keeps going. The measured beginner bias here is anterior, and it lengthens the palatal plane.
Point · ANS
Ant. Nasal Spine (ANS)
The tip of the anterior nasal spine — the front end of the palatal plane.
At Beginner a placement counts as found within 2.5 mm of the reviewed reading.
How to find it
Press a step to be shown it on the ceph.
Common errors
Each figure is the reviewed reading of Ant. Nasal Spine (ANS) and a typical miss, on the same ceph, at the distance the mistake usually goes.
Placed at the base of the spine
Where the spine is thin and the ceph is dark, the point falls back to the last clearly white pixel, which is its base.
Used in
3 measurements are built on it. Miss it, and every one of them moves.
Your record
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