Johnson Level & Tool Mfg. 40-6184 - Manual (Page 10)

10 ©2014 Johnson Level & Tool - Rev. 1
8. Self-Check and Calibration
Horizontal bubble vial check
Put the laser on a smooth and horizontal plane, and then check
according to steps as follows:
Step 2 Rotate unit 180 degrees.
If the laser level is in horizontal, the bubble vial position should be as follows:
Step 1
Step 3
7722H_Manuals 1/17/14 8:02 AM Page 10