Measurements
Reflector types: The reduction formulas are valid for measurements to all reflector types:
• measurements to prisms, to reflector tape and reflectorless measurements.
Formulas: The instrument calculates the slope distance, horizontal distance, height difference in
accordance with the following formulas: 
Earth curvature (1/R) and mean refraction coefficient (k) are automatically taken into account when calculating the horizontal distance and height difference. The calculated horizontal distance relates to the station height and not to the reflector height.
Distance measuring program Averaging In the distance measuring program Averaging, the following values are displayed:
