AccuLine 40-6515 Instruction Manual - Accuracy Calibration
©2007 Johnson Level & Tool
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6. As shown, turn the instrument by 90° and place it on the
platform, with the operating panel facing you. Perform
Y-direction self-check with the same method as X-direction
self-check, and mark point C and point D by turns.
7. If point C and point D are within 1/16” at 25’, the accuracy is
within tolerance. Otherwise reference section 12 of this
document.
Accuracy Calibration
1. As shown in the following figures, screw off the adjustment-hole
bolt with the cross screwdriver, and adjust the fine-adjustment
bolt in the instrument core with a flat head screwdriver until the
laser line in within 1/8” at 50’.
2. Check the accuracy of X-direction with the same method as that
of Y-direction. If the accuracy is
beyond tolerance, make the
calibration of X-direction through the
adjustment hole with the same
method as above.
3. After calibration, rotate the
instrument by 90 degrees in turn to
make sure that the lines on the
wall should be within 1/8” at 50’.
4. Reinstall the adjustment-hole bolt.