Item Brochure

1810 SE First Street, Suite H
Redmond, OR 97756
www.LaserLineMfg.com
Phone [phone]
Fa x 541 548 0892
HOW TO READ “METRIC” TRUE ELEVATION
YELLOW BACKGROUND – BLACK NUMBERS
The GR1000 Series rods have a total working range of 3 meters elevation. The tape is a continuous
loop having three one meter sections designated by:
ONE DOT
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TWO DOTS
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THREE DOTS
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1. Set rod foot on a benchmark or hub with a known elevation; i.e. 168.50 elevation.
2. Run the laser receiver up or down the side of the rod and / or raise or lower front rod section
until you get the “on grade” signal on your laser detector. If you are using an optical instrument,
site to the rod and use the horizontal line as your grade reference.
3. Loosen the tape lock pin (lower knob) and disengage the tape pin from the grommet.
4. Roll the tape face until 5 is across from the pointer on the laser detector bracket. You are using
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as
168. Meters and the decimal number of .5 to equal 168.50.
5. Lock the tape by engaging the tape lock pin into the nearest grommet. Then tighten the knob.
You have now locked into the rod elevation (168.50). All future reading will be true elevation above
or below 168.50.
6. To find an elevation, simply set the rod foot at any location on the job within the range of your
laser. Run the detector and / or front rod section up or down until you pick up the “on grade” signal
from your detector. Read the number opposite the pointer. That number is your true elevation.
EXAMPLE:
Rod reading is 1.5 = 167.15 true elevation
Rod reading is 2 = 168.20 true elevation
Rod reading is 7 = 169.70 true elevation
Note: If you are using a GR1450 series five-meter rod, it will have five sections:
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,
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,
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,
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,
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Set your initial elevation using the
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section.
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