The present invention provides methods and apparatus for interconnecting disparate communications systems. The particles comprise less than 15% of total volume of the plastic sheet, at least 50% of the particles have a thickness less than about 20 layers, and at least 99% of the particles have a thickness of less than about 30 layers. One of those operating parameter noise values that best meets the selected acoustic wave energy emissions criteria is used to aid in determining corresponding configurations changes to thereby better meet those criteria. The first arm is pivotally and perpendicularly connected to the central rod of the tripod. The unit can be coupled to a powered device, such as a hand held tool or the like, to provide power for that device.