UMA Indicators are fully FAA TSO'd to C2d specifications. Installable in a fixed wing aircraft with a reciprocating or Turboprop Engine. Must be installed in a temperature controlled environment form -55 to 85°C, to a max altitude of 25,000 ft. 

UMA Dual Scale Airspeed Indicator
Outside/Inside Scale: 40-160 MPH/40-135 Knots