In RCS testing, a large turntable is used to support and rotate a test object that is too large or heavy to be placed on a small turntable. The large turntable can support and rotate objects that can be as large as an aircraft, tank, or ship, allowing measurements to be taken at different angles and orientations.

In antenna measurement, a large turntable is used to support and rotate a measurement antenna that is too large or heavy to be placed on a small turntable. The large turntable can support and rotate antennas that can be as large as a satellite dish or a radar antenna, allowing measurements to be taken in different directions and at different angles.