>Correct, and I'm talking about phase because the two grooves are never perfectly perpendicular.
The cutter moves the cutting head in a straight line.
Most replay of disks uses an angled arm that normally only shows zero error at two points on the disk.
This error is so small that trying to correct for it makes very little sense to me.
Replaying the disk using a straight line tonearm removes this very small error completely.
Having a few degrees at most tracking error due to playing with an angled tonearm that upsets the perpendicularity of the disk left/right track is still so small that this error when summed is of no concern to me.
Most cartridges has greater errors than this ime.
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