Whatever you set your sights on - the long awaited buck at the edge of the woods or far-reaching construction projects - the LEICA RANGEMASTER 900 scan laser rangefinder tells you exactly how far away you are from your target. The new LEICA RANGEMASTER 900 scan rangefinders features an additional scan function, that furnishes constantly updated measurements when the release button is pressed down continuously. The scan function is especially useful with moving subjects and for use at great distances.