An abrasive tool comprising of a base portion, having a foam layer affixed to the abrasive tool base portion, and a plastic film layer affixed, bonded or glued to the foam layer. The network is a wavelength division multiplexed optical transport network. A locking pin through which at least one transverse channel passes, with an axial channel branching off therefrom, is provided on the inside of the dispensing nozzle. Information regarding the ejection volume characteristics of a plurality of nozzles is acquired as appropriate, and by estimating changes in coloration from this information, suitable timings for overwriting such parameters are determined. These devices have the technologically useful property of volumetrically expanding upon lowering of the device temperature below the reference or processing temperature. The weatherproof door and hood work together to protect the transfer switch from exposure to rain and other unwanted substances that would otherwise harm the components within the switch if mounted on the exterior of a structure.