A linear gauging device when attached to a chain saw bar will facilitate in the accurate measurement and swift successive cutting of a log into pre-determined uniform lengths of firewood. The copolymers are comprised of about 50. The bandwidth control unit executes a process of changing the setup of the bandwidth on the basis of the received feedback signal. Further, the time tracking tool may provide reports that include category and sub-category information for tracked timing data. Next, the actual power delivered to the hand pieceblade andor the impedance of the hand pieceblade is measured at a level 5 power setting.