Dynavector DV 507 MKII tonearm - Manual (Page 5)

b) Overhang alignment
Overhang is the distance from the spindle center of the turntable and the stylus
tip of the cartridge when the tonearm is rotated over the spindle. The overhang
of 15mm has been designed on the 507MKII so that minimum tracking error is at
the inner track of the record.
NOTE: You can easily check the overhang by using the mounting gauge supplied
- see above, which fits between headshell and arm. When the stylus rests on the
zero point then overhang is perfect. The inner null point and the outer null point
on the mounting template is correct when the overhang alignment is set using
this gauge.
c) Azimuth adjustment
Check the cartridge seen from the front. It should be perpendicular to the record.
The azimuth can be easily adjusted on the headshell we supplied - simply loosen
the socket head screw located on the side of the headshell.
NOTE: If the overhang or the azimuth adjustment is not correct, it will cause
tracing distortions.