A sliding module includes a first element, a second element, and a third element disposed between the first and second elements and rotated between a first reference position and a second reference position. An emitter establishes a safety zone that is not to be exceeded by the person, and an adjuster may be operatively connected to the emitter to adjust the size and position of the safety zone. The first end is adapted to engage a torque applying tool. The image processing machine may further include oscillators for feeding clock signals to the respective large scale integrated circuits, and the control unit may cause the oscillators to issue the clock signals with a lower frequency when switching to the power save mode. This allows the user to have the flexibility to control metrics used for selection of a best address for querying clients, as well as the metric order and additional parameters used in the GSLB process, at the host level.