Range finding binoculars were first placed on the market by Leica in 1992 and in 2000 implemented this technology into monocular. LRF binoculars combine two optical instruments in one device. Binoculars for viewing distant objects and a laser rangefinder for determining the exact distance to objects in the field of view. Measurements of the distance are initiated with a press of a button, when a laser beam is emitted. Calculation of bullet trajectory is measured based on gravitational force, providing the exact aim. And the time that laser reaches the target and intercepting its reflection back to the binoculars, measures the distance to the object. All lasers in these types of binoculars are eye safe. Some of them have implemented Setup Modes, with Rain mode (making corrections based on the impact of the rain), Scan mode (continually calculating and displaying) and First target priority (offering the shortest distance of all the objects in the field) adjustments. Range finding binoculars are very helpful to correct the ballistic turret or ballistic reticle, when shooting at longer ranges. There are however also other uses of these binoculars. With the addition of the laser rangefinder, these binoculars gain a very distinct additional functionality compared with classical binoculars. The down side of this matter is that producing such devices with the same level of optical quality demands much higher costs than normal binoculars.