Mach Speed Indicator, .3-1 Mach, Aero Commander/IAI Westwind Lily Bomber each holding 0-60 gals

each holding 0-60 gals

The housing looks to have been repainted at some point in its history

The red maximum airspeed pointer index is set by accessing an adjustment screw

The system consists of a motor-driven speed sensor and a display instrument

Mach Speed Indicator, .3-1 Mach, Aero Commander/IAI Westwind Lily Bomber each holding 0-60 galsThis is Mach Speed Indicator, or Machmeter, was made by Kollsman for an Aero Commander aircraft as it is made to an Aero Commander part number, 3883063 1. Likely made for an Israel Aircraft Industries (IAI) Westwind (formerly Aero Commander 1121 Jet Commander). Measures ~3. 25 inches diameter and ~4 inches deep. Can't tell how fast you are traveling relative to the speed of sound without a Machmeter!