A method and system for sound beam-forming using internal device speakers in conjunction with external speakers provides a low cost alternative to present external surround array systems. The apparatuses may be operably connected with a power source and with one or a plurality of computers or other data collection devices to transmit fastener hole depth, countersink depth andor hole diameter measurement data andor information to them each time that a fastener hole is measured, while the apparatus is continuously measuring fastener holes. a mode field containing a camera operation mode, ii. A means for selectively applying electrical power has at least a first selectable mode in which the means applies power to the first lighting unit whereby a first light output pattern is emitted, and a second selectable mode in which the means applies power to the second lighting unit whereby a second light output pattern is emitted. In addition, each handset can be dynamically personalized for any family member. Other embodiments of the system include only the mixing chamber, where a flow of at least one flowable material in the form of high or low pressure gas, liquid, andor particulates suspended within the gas or liquid enters either laterally or axially, forms boundary layer and laminar flows, and exits through the accelerating chamber.