Properly stitching a set of panoramic images to produce a super-sized panorama or VR movie requires, among other things, a completely level horizon line. To obtain that result, this Fiesol PB-70 Panning Base is extremely useful. It has fine micro-adjustments to help you achieve a precise horizontal plane in your images. The base can be inserted between a Fiesol Standard or Tournament tripod and its head so that it fits seamlessly into your camera support system.