Category: InstrumentsInstrument Category: CHTType: J - Black and YellowCalibration: Scale 500F @ 8.0 ΩWeight: 0.4Size: 3-1/8"Single or Dual?: DualThe best value in the industry backed by a generous 3-year warrantyIncrease the life of your engine and enhance safety through proper monitoringIntended for use on twin engine aircraft and calibrated to true temperature—500 degrees Fahrenheit at 8 ΩDesigned to provide temperature compensation for accurate readings year round, on the ground and at altitudeNo risk of malfunction during electrical failure–requires no external source of power for operationAll necessary mounting hardware includedAlcor instruments are designed, manufactured, and supported in the U.S.A.