Johnson Level & Tool Mfg. 40-6065 - Manual (Page 12)

12 ©2012 Johnson Level & Tool - Rev. 2
Vertical Calibration Check
Put the level on a smooth vertical
plane and observe the LCD display.
Note the reading after 10 seconds.
Then turn the level 180º on the same
plane. After another 10 seconds note
the second reading. The calibration
is necessary if the difference
between the two measuring readings
is over 0.2%.
Calibration in the Horizontal Direction
1. Put the level on a flat surface and press the “CAL” button. -0- will
be displayed. Wait 10 seconds.
2. Press the “CAL” button again and -1- will be displayed. Turn the
level 180 degrees on the same surface. Wait another 10 seconds.
3. Press the “CAL” button again and -2- will be displayed. If it beeps
twice the calibration is not completed and the procedure should
be repeated. If it continues to beep twice the sensor may have
been damaged and the unit should be serviced.
Calibration in the Vertical Direction
1. Press and hold the “CAL” key for 10 seconds, unit will beep once.
When the LCD shows -0-, it means the instrument has already
entered the calibration status.
2. Place the digital level on the vertical reference surface, after
10 seconds, press the “CAL” again, and the LCD shows -1-.
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