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©2018 Johnson Level & Tool - Rev. 1
Setting a Temporary Zero Point
This function allows the user to establish a new zero point, which the
detector will consider to be on grade. It is a temporary setting;
once the detector is powered off and back on, the default zero
point will again be considered on grade.
1. When the laser level’s beam intersects the detecting window,
move the detector until the point you wish to define as the
temporary zero point meets the laser beam.
2. Press on the detector to establish the temporary zero point.
3. To return to the default zero point, power off and on the detector.
4. The zero point adjustment range is limited to +/- 0.75
″
(20mm).
Detector Maintenance
Keep the unit, particularly the reception window, clean. If it does
become dirty, use a soft, dry cloth to wipe it clean.
Technical Specifications
Detecting Accuracy:
Fine: 0.04
″
(1mm)
Medium: 0.2
″
(5mm)
Coarse: 0.35
″
(9mm)
Automatic Shut-Off:
10 minutes
Power Supply:
4 “AA” Alkaline Batteries (included)
LED Display:
Down Arrow, Up Arrow, Horizontal On
Grade Bar (Front, Side, and Rear
of Detector)
Dimensions:
3
″
x 3.3
″
x 6.8
″
Weight:
0.8 Pounds
Tripod Thread:
1/4
″
-20
IP Rating:
66
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