Accuracy Check

Regularly check the accuracy of the grade measurement and distance measurement.

Accuracy Check and Calibration of the Grade Measurement

  1. To do this, lay the measuring tool on a table and measure the inclination.
  1. Turn the measuring tool by 180° and measure the inclination again.
  • The difference between the displayed values must not exceed 0.3°.

In case of greater deviation, the measuring tool must be recalibrated.

  1. To access the Basic functions menu, press and hold button (7) .
  1. Select  and confirm the selection with button (7) .
  1. Follow the instructions on the display.
We recommend that you perform an accuracy check and if necessary a calibration of the measuring tool after extreme temperature variations and after impact to the tool. After a temperature variation, the measuring tool must adjust to the ambient temperature for a while before calibration is performed.

Accuracy check of the distance measurement

For the accuracy check, the measurement should be taken under favourable conditions, i.e. the measuring section should be indoors and the target surface for the measurement should be smooth and reflect well.

  1. Choose a measuring section of approx. 3 to 10 m in length, the exact length of which is known to you (e.g. room width, door opening).
  1. Measure the section 10 times in succession.
  • The deviation between the individual measurements and the mean value must not exceed ±4 mm across the whole measuring section. Log the measurements, so that you can compare their accuracy at a later point of time.