Bowers XT Instrucciones De Funcionamiento página 3

RESETTING PROCEDURE...
Should the gauge start to lose accuracy due to wear etc., it may be reset
as follows :-
1) Insert the instrument into the setting ring gauge and set at the
correct tightness using the ratchet controller.
2) Lock the spindle with the locking screw located through the hole in
the grip-ring.
3) Loosen the ratchet controller by inserting the allen-key provided into
the screw located in the end of the controller and unlock the screw.
4) The thimble will now be free and can be rotated and set to the size
on the setting ring.
5) Re-tighten the controller screw and slacken off the spindle locking
screw. The micrometer is now reset.
6) Recheck the gauge in the setting ring. Gauge reading should be the
same as the setting ring calibrated value.
A KEY IS PROVIDED TO MAKE ADJUSTMENTS OF THE MICROMETER NUT
IN THE EVENT OF WEAR.
PROCEDURE:–
1) Remove the thimble and spindle assembly from the micrometer by
completely winding the thimble off the sleeve.
2) Locate the key in the slots of the brass nut.
3) Make adjustments in very small increments. A clockwise rotation of
the brass nut will close the nut to compensate for wear.
4) Replace the thimble assembly and recalibrate the gauge as per
resetting procedure above.
EXTENSIONS: When extensions are used for deep hole measurement it
will be necessary to reset the instrument as per the resetting
instructions above.