Calibration
Install shaft of Alignment Tool in chuck or collet of machine. Lower spindle until right indicator point contacts known flat-machined surface positioned above surface of table. ( most anything, a machine vise works great. ) Continue lowering spindle until right indicator (#2) needle makes 1 full turn and stop at 0. Take notice of the exact spot the point of right indicator touches. Lock spindle preventing Z-axis movement. ( up-down )
Raise right indicator lift knob and rotate spindle approximately 45° . Use end of plate as handle to rotate spindle, not indicator lift knob. Release right indicator lift knob and pick up left indicator lift knob and rotate spindle allowing left indicator (#1) point to contact precisely the same location as right indicator was originally touching.
Loosen left adjustment screw allowing adjustment of the left indicator (#1) in housing
until it reads exactly the same reading as right indicator read contacting the same spot.
Tighten adjustment screw and stop and go through the alignment procedure a second time to
check for errors. If you get the same readings you are set.
Unlock spindle and proceed with alignment procedure. Calibration is generally only
required to satisfy policy of calibration intervals you require. Tool stays in calibration
very well unless it is dropped or struck with something.
If indicator readings differ, adjust tilt of spindle or table accordingly until both indicators read equal. This can be done in one step by watching both indicators. When the both read the same, stop. Adjustment can usually be done in 1 step.
Once again, indicator readings are not important except that they both need to be
equal.
Raise spindle, removing contact with indicator point and table.
Turn spindle 90° and lower to check Y axis ( in–out )
