To meet the demands of the forestry industry for more functions to conduct simple measurements. The Forestry rangefinder F1000 is equipped with measurements in addition to the conventional vertical separation. The measurement provides the difference in height between two targets by measuring horizontal distance to a target then angles to the target base and the top. It is very useful when the laser beam is blocked by the bushes or branches that cover the base or top of a tree. Measurement can be displayed in feet as well as meters and yards.