Lasertec HV1G Instruction Manual - Checking Calibration
Manual is about: Green Rotary Laser
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Before doing any precision levelling it is advised to check the calibration of the unit.
‣ Set up the laser on a tripod at about 30m facing a wall or staff with a detector.
‣ Allow the unit to level.
‣ Detect and note laser position on the wall or staff.
‣ Without moving the tripod rotate the unit 180°.
‣ Detect and note laser position on the wall or staff.
‣ Calculate the distance between the two readings.
‣ The difference should be within 6mm at 30m.
‣ If the unit is out of calibration it is advised to send it in to Spot-on.
(see www.spoton.com.au for details)