The uAvionix AV-20 and AV-30 bring new meaning to the phrase multi-function. Calling them a Swiss army knife of cockpit retrofit equipment might be more appropriate. The customizable AV-20 can act as a probeless angle of attack indicator, a G-meter, an attitude indicator, a skid/slip indicator, a clock, an outside air temperature gauge, a bus voltage display, a count-up or count-down timer, an engine-run timer, a flight timer, a density altitude display, a true-airspeed display or as an audio alerter for a number of other cockpit warnings. All options are selectable in flight. The AV-20, certified under provisions of the FAA’s non-required safety-enhancing equipment (NORSEE), fits into a standard two-inch panel cutout that keeps installation time to a minimum.