 These displays are also referred to as a Range-Height Indicator, or RHI, but were also commonly referred to (confusingly) as a B-scope as well.The H-scope is another modification of the B-scope concept, but displays elevation as well as azimuth and range.The elevation information is displayed by drawing a second "blip" offset from the target indicator by a short distance, the "slope" of the line between the two blips indicates the elevation relative to the radar.