EGT-1, Mixture-Mizer, Exhaust Gas / EGT Engine Monitor Indicator

2 1/4" KC Avionics Mixture Mizer Exhaust Gas Temperature / EGT Aircraft Engine Monitor Indicator as shown on photos. P/N EGT-1(??). No probes with the indicator, just what you see on the photos comes with it. Used on Cessnas, Pipers as well as most other types of aircraft. It was removed from a salvage aircraft.