The Range Height Indicator (RHI) scope is used with what type of radars?

The Range Height Indicator (RHI) scope is specifically designed to be used with height finding search radars. These radars are utilized to determine the altitude of targets and provide a vertical profile of the atmosphere. The RHI scope displays data in a way that represents the range and height of detected objects, making it ideal for applications such as air traffic management and meteorology.

In contrast, air traffic control radars primarily focus on tracking aircraft in two dimensions, without the specialized height information that height finding radars provide. Marine navigation radars are primarily concerned with detecting ships and land obstacles, and weather forecasting radars focus on precipitation and storm systems without requiring the same height resolution. Thus, the specificity of the RHI's use with height finding search radars is what makes it the correct answer in this context.