A multi-function hand tool with a pivotally collapsible jaw-type tool that has a jaw lock which mechanically prevents the jaw-type tool from collapse. The plurality of memory units respectively outputs a data current to the sensing circuit, while the sensing circuit further includes a plurality of first transistors, a plurality of second transistors and a plurality of sensing amplifiers. The second power level is adjusted separately from the first power level. The medium orientation identification device identifies orientation of the recording medium for use in printing by the printing device. The structure can also include a removable string of LED lights within the inner space. In some embodiments, the frequency spread between the sources may be controlled to change a pulse-width of the pulses.