Swarovski's mount, attaches to car windows and allows for steady viewing with a rangefinder or spotting scope. It can also be used with a digital camera or a video camera. The compact ball head design doesn't have any handles to interfere with your optics. All you have to do is set the tension so your optics stay in place, but are a movable. 

Note: Attaches to vehicle windows for use of digital camera, video camera, rangefinder or spotting scopes