For precise indirect measurements with the tilt sensor from the tripod; tilt axis and laser beam are in one plane (elimination of tilt axis error).
More precise measurements in combination with tilt sensor when using on tripod with adapter
To have the laser beam aligned to the tilting axis when measuring angles and moving the Leica DISTO™ vertically (eliminate the error in the axis deviation)
To use on set up poles with diameters between 11-35mm (0.45”” – 1.35””)