©2007 Johnson Level & Tool
11
Calibration
Re-calibration can be performed as described below.
1. Use a level to mark a horizontal reference line on the wall.
2. Power on the unit to compare the projected horizontal line with its references.
Compensator has to be locked before making calibration adjustments.
If it tilts, remove the side plastic screw/plug and use an allen wrench to
calibrate the unit through its side calibration hole. Rotate the allen wrench
clockwise when the horizontal line tilts right. Rotate the allen wrench
counter-clockwise when the horizontal line tilts to the left.
3. If the horizontal line is too low or too high, carefully disassemble the
window frame by removing the outer plastic screw/plug and the inner metal
screw. Use an allen wrench to calibrate the adjustment screws located between
the glass prisms. Rotate the allen wrench clockwise when the horizontal line is
too low. Rotate the allen wrench counter-clockwise when the horizontal line is
too high. Reassemble the window frame after completing the calibration.
9. Technical Specifications
Laser Wavelength
635nm±10
Laser Classification
Class II (40-6620)
Class IIIa (40-6625)
Maximum Power Output
≤
1mW (40-6620)
≤
5mW (40-6625)
Accuracy
±1/8"/35 ft. (±3mm/10m)
Interior Range
Up to 100 ft. (30m) depending upon light
conditions (40-6620)
Up to 150 ft. (45m) depending upon light
conditions (40-6625)
Self-Leveling Range
± 5°
Power Supply
3 “AA” alkaline batteries
Battery Life
Approx. battery life 35 hours continuous use
Dimensions
2" x 5-1/4" x 6-1/4" (51x133x159mm)
Weight
2 lbs. (0.93 Kg)
Working Temperature
14°F to 113°F (-10°C to +45°C)
Center Screw Thread
5/8" – 11; 1/4" – 20
IP Protection Class
55
