Generic XML Configuration file.

A static class to perform phyical unit transformations This class is static so that transformations can be easilly applied globally All functions assume the the internal representation is fixed and in SI where possible (Pressure is in Bar, but this is accepeted for use with SI by NIST.) Our unit conversion requirements are pretty modest so a dictionary or some other more generic mechanism is overkill.

A generic dictionay that can be xml serialized. This code was copied mostly whole from Paul Welter's Weblog

The type of units to display

Class to handle insertion and removal of USB devices