A portable boringfacing machine using a single drive motor for rotating a boring bar and for either axially translating a cutting head assembly along the bar or radially moving the blade of the cutting head assembly using a lead screw. The former and the latter stage multiplexers output signals according to a forward clock, a backward clock, a forward control signal, and a backward control signal. The light guiding plate comprises a light emitting surface and a plurality of lateral sides adjacent to the light emitting surface. Another request to the web page of the application under test is made using one or more parameters corresponding to the unused parameter fields. The drift is used to adjust the time base to the period of the clock if the temperature variation \u0394Ti is greater than this threshold \u0394T. The strap of the second purse includes a third connection point which interacts with the second connection point.