Technical Data
FlexLine, 293
14.8
Reduction Formulas
Formulas
The instrument calculates the slope distance, horizontal distance, and height
difference in accordance with the following formulas. Earth curvature (1/R) and mean
refraction coefficient (k = 0.13) 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.
a
Mean Sea Level
b
Instrument
c
Reflector
Slope distance
Horizontal distance
Height difference
TSOX 126
c
a
b