English edit

Etymology edit

From Mach +‎ -meter.

Noun edit

Machmeter (plural Machmeters)

  1. (aviation) An instrument that measures the speed of an aircraft relative to that of sound and displays it in Mach numbers.
    • 2012, Aviation Maintenance Technician Handbook-Airframe Volume 2[1], FAA:
      Many high performance aircraft are equipped with a Machmeter for monitoring Mcrit. The Machmeter is essentially an airspeed instrument that is calibrated in relation to Mach on the dial.

Translations edit