The Stabila 07441 REC100G green beam receiver with bracket is measuring made simple for green beam rotating lasers. A series of symbols indicate your distance from the reference height and whether you are too high or low. Two sensitivity levels simplify setting-up over longer or shorter distances. Works with most commercially available green beam rotating lasers. Audible tones help you find grade when you can't see the display. Included bracket adjusts to rods as wide as 3". Features dual displays.