A flip style cellular telephone includes a main housing, a microphone mounted in the main housing and a flip, pivotably mounted to the main housing by a hinge. The ATV has a forward grid-like shelf attached thereto and supported by the chassis of the vehicle. An implied variance of the index and an implied variance of each of the at least some constituents are determined based on the received data. A chip receiving opening is provided in the tool in the vicinity of the blade, said opening traversing the tool in both the axial and the radial direction.