How To: Level Calibration & Vial Replacement

VERTICAL CALIBRATION

1) Place level against vertical wall or door jam
2) Surface must be straight and close to being plumb
3) Note position of bubble
4) Turn level end for end holding in exact same position
5) Note bubble position
6) If bubble reads in different position, adjust to bring bubble back half the difference.
7) Repeat step number 4
8) Adjust screw (if necessary) until bubble position is exactly the same when level is held in both directions on the same surface

HOW TO REPLACE VERTICAL VIAL HOLDER.

1) Remove screw.
2) Remove round hollow plug.
3) Slide vial towards end of level.
4) Place blade of screw driver behind vial and tap with light hammer to force vial and end cap out of level.
5) Place spring in spring holder on vial retainer and slide into level.
6) Line up plug opening with small round hole in level, and insert hollow plug, pressing into place.
7) Insert screw and tighten until vial centers in vial opening, then follow instructions on how to calibrate vertical vial.

HORIZONTAL CALIBRATION

1) Calibrate level by placing on a flat surface that is reasonably level, then note the position of the bubble in the vial.
2) Reverse the level end for end using the same working edge and note bubble position, if different, adjust screws until bubble reads exactly the same in both directions, NOTE; split the difference of the bubble movement and test; tightening either screw makes the bubble move away from that screw.
3) Repeat until bubble reads exactly the same in both directions.

1) Remove Vial, 2 screws, 2 springs, 1 luminous strip
2) Squeeze vial holder together, to allow complete holder to slide inside level.
3) Remove the two 1" long springs.
4) Pull old vial holder up through opening one end first. NOTE: If this is a 24 " level with hand holes it is necessary to remove one handle in order to slide vial holder far enough past center of opening to be able to pull it out and insert new vial holder.
5) Insert new vial holder that has been assembled and squeezed together by putting one end down through center opening of level, and then pushing completely into level, may require light tap to get into opening.
6) Slide to one side of opening and set 1" long spring on spring locator.
7) Gently slide to other side of opening and set the 2nd 1" long spring on spring locator.
8) Gently slide holder back to center and with needle nose pliers grab the inside section of the vial holder pulling it up and setting the outer lip on the edge of the level in the vial opening.
9) Press your finger against holder so as to prevent it from slipping off the edge of side wall in vial opening in level.
10) With small blade of flat screw driver insert between the two parts of the vial holder and pry up and over to set the other lip on the other edge of the level in the vial opening.
11) Holding in place with finger insert blade of screw driver in opening between locking clips and screw hole right of center, and pry apart, you should hear a click when in place, repeat same procedure on left side of holder.
12) Vial holder should now be in place, resting on both lips of holder, and on the side walls of the level, held firmly in place by the pressure of the two springs pushing against the top of the level.
13) Insert luminous strip.
14) Insert two 7/8" long springs into spring locators on vial, then drop into position in vial holder.
15) Insert two 1 1/16" long #6 screws through screw holes in vial and tighten until top of vial is just below the surface of the level.
NOTE: The surface does not have to be level to accomplish this procedure, only reasonably level. Re-insert new handle if you are repairing a 24" level with handles.