How accurate is the tilt sensor in the Leica DISTO ™ D3?
The accuracy of the tilt sensor is ± 0.3o to the laser beam and ±0.3o to the housing. The accuracy varies according to the measured angle and distance. The horizontal distance error (fd) and the height error (fh) can be calculated as follows: fd = horizontal distance error d = measured distance a = angle at which the distance is measured fa = possible angular error fd = d * cos (a) – d * cos (a + fa) For example, if a distance of 10m is measured at an angle of 10o, the error on the direct horizontal distance (fd) is 9mm. If a distance of 10m is measured an angle of 45o, the error on the direct horizontal distance (fd) is 37mm. To obtain the best result using indirect measurement and minimise the deviation, the device should be held as close to the horizontal as possible.
