Brand New Superior 2" 28V Mechanical Tachometer. TSO'd. Tach hourmeter and RPM operating range markings are currently preset for a panel upgrade in a Cessna 182Q by authorized laboratory Pacific Southwest Instruments (PSI) but can be reset by PSI to your specifications for a reasonable fee. Believed to be an approved instrument for Diamond aircraft but needs confirmation with Superior or PSI. Comes with original packaging and all documents. FREE EXPRESS SHIPPING in the U.S.