Page 21
Special Cases
There are three screws on the bottom of the KP-3, these are the angular adjustment screws, these are set at the factory
and in general do not need to be adjusted.
Angular Alignment:
Angular alignment is the relation of the spindle center line to the stylus stem center line. This adjustment is SET AT THE
FACTORY. This adjustment is rarely needed except when extremely small or long stylus or a straight shank stylus (shank
is same diameter as ball end) is used, Typically verifying that the Angular Alignment is not grossly off is all that is needed.
The angular alignment and run-out adjustments are not the same thing but are interdependent. The run-out at the stylus
mount end of the stylus stem should be nearly the same as the runout at the tip. ( Note: Adjust the stylus tip run-out after
checking the Angular Alignment). Note: Special cases When the stylus tip and stem are nearly the same diameter this
adjustment is critical to keep the stem from contacting a vertical surface before the tip. This adjustment is also convenient
to adjust parallelism when flat disc or block stylus types are used.
To check the angular alignment begin by sweeping in the KP-3 at the base of the stylus stem (the end away from the tip)
with the dial indicator. If the run-out indicated at this point is greater than the difference between the stylus tip diameter
and stem diameter then it will be possible for the stem to contact a vertical surface before the tip (also called “shanking
out”). In this case angular adjustment is needed. If the difference between the tip diameter and the stem diameter is less
than the measured run out, no Angular adjustment is needed.
Angular Alignment jack screws
Factory Set
Cap mounting screws, do no
loosen Factory Set
