Digital Outside Air Temperature Gauge | Celsius/Fahrenheit/Voltmeter | Green LED display 00089-0016 These FAA TSO C3b certified

These FAA TSO C3b certified units feature a 3-inch display

Directs hot air around pipes and tubing for even heating

This EL light bezel (EDMO# 2-31-W) fits over 3-1/8 inch standard instruments

This EL light bezel (EDMO# 2-30-G) fits over 3-1/8 inch standard instruments

the cover is used when an instrument actually becomes non-functional

Digital Outside Air Temperature Gauge | Celsius/Fahrenheit/Voltmeter | Green LED display 00089-0016 These FAA TSO C3b certifiedThe 307 series digital outside air temperature (O. A. T.) gauge replaces one of the most difficult instruments to read in the cockpit. The digital probe with 12 ft cabling sends an accurate reading to the panel mount, super bright, sunlight readable display. The (EDMO# 307FCE GRN) has a voltage meter, temperature probe, and green LED lighting.