Johnson Level & Tool 40-6060 Manual De Instrucciones página 9

8305H-All_Manuals 8/18/14 8:02 AM Page 9
Vertical Accuracy Check
1. Turn on the digital level and put it on a smooth and vertical
plane as shown in figure 5. Wait 10 seconds until the data
reading is stable and then record the angle degree.
2. Rotate the digital level 180º on the same plane, see figure 6,
wait 10 seconds until the display data is stable then record
the second degree value.
3. Turn over the digital level in the same plane, figure 7, wait 10
seconds and record the third degree value when it is stable.
4. Rotate the digital level 180º in the same plane, figure 8, wait
10 seconds and write down the fourth degree value when
stable.
5. Of the four degree readings, if any two of the values have a
difference over 0.2º, the unit must be recalibrated.
Figure 5
Horizontal Calibration
1. Turn on the instrument and put it on a smooth and horizontal
surface, figure 9. Press and hold in for 2 seconds the Calibration
key, -0- will show on LCD display. Wait 10 seconds then press the
Calibration key again, the LCD will show -1-.
2. Rotate the digital level 180º on the same plane, figure 10, wait 10
seconds and press the Cal key until the LCD displays -2-.
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Figure 6 Figure 7
Figure 8
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