#speedometer__speed_indicator__speedindicator  a meter fixed to a vehicle that measures and displays its speed
  supertype:  meter.measuring_instrument  any of various measuring instruments for measuring a quantity
  subtype:  machmeter  speedometer for measuring the speed of an aircraft relative to the speed of sound
  part of:  motor_vehicle__motorvehicle__automotive_vehicle  a self-propelled wheeled vehicle that does not run on rails

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