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©2009 Johnson Level & Tool
4. Operating Instructions
IMPORTANT:
It is the responsibility of the user to verify the
calibration of the instrument before each use.
Set-Up the instrument on the tripod
When setting up the tripod, make sure the three tripod points are firmly
into the ground and the top of the tripod head is as level as possible.
Adjust the height of the tripod to a comfortable viewing height, and
secure the retractable legs. Attach the instrument to the tripod head
with the center screw and tighten securely as shown in figure below.
Leveling
Mount the instrument on the tripod, lock the
telescope in place with the lock lever and line
up the telescope vial in position #1 as shown.
Then grasp screws A & B so that both thumbs
are moving in opposite directions, either
toward each other or away from each other.
Note that the bubble moves in the same
direction as your left thumb.
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