The lever operates by applying forces at different distances from the fulcrum, or a pivot. First, imagine that the entire device is rotating around the (vertical) pivot axis. This connection allowed a limited arc for the levers to pivot in. The remaining leafs were mounted to pivot freely. The brake shoes pivot at opposite points to each other. Interchanging rows or columns in the case of a zero pivot element is necessary. The watch contains an oscillating weight that turns on a pivot. Taper clippers are powered by a linear or pivot motor. The links can pivot about these pins. The windshaft sits on a tripod which allows it to pivot. This was due to legislation introduced in some markets regarding the rear pivot door. It is surmounted by a brass pyramidal pivot and a glass plate covers all. It does not pivot as a drawbar does. Some traders believe in using pivot point calculations. This involved discovering the centre of oscillation and its reciprocal relationship with the pivot point.