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Technical Data
Leica TPS800-4.0.0en
Atmospheric correction
The distance displayed is correct only if the scale
correction in ppm (mm/km) which has been entered
corresponds to the atmospheric conditions
prevailing at the time of the measurement.
The atmospheric correction takes air pressure and
air temperature into account.
For utmost precision in distance measurements,
atmospheric correction must be determined with
1 ppm accuracy, air temperature to 1°C and air pres-
sure to 3mb accuracy.