Airspeed Indicator 8125-B.178, 3″, 40-250MPH/40-215 Knots



Airspeed Indicator 8125-B.178, 3″, 40-250MPH/40-215 Knots

8125-B.178 Overview

United Instruments 8125-B178 True Airspeed Indicator is designed for use on an aircraft to indicate the speed relative to the desired altitude or air at sea level. This FAA Certified Indicator is then able to indicate the equivalent speed corresponding to the actual force of the air.The indicator has an inner dial to indicate true airspeed. The altitude and temperature are the conversion factors used to obtain this reading with the use of a setting knob. The airspeed indicator measures the differential pressure developed between the pitot and static opening. The 8125-B178 indicates the Range Out pressure in units of the airspeed of 0-250 Mph and a Range In of 0-215 Kts.


  • Certification: FAA TSO C2b
  • Case Configuration: MS33638, 3 inch
  • Typical Weight: 0.7 pounds
  • Static, Pitot Pressure Connector: 1/8-27 ANPT
  • Installation: Removable spring nuts and #6-32 screws
  • Lighting: Available upon request
  • Range Out: 0-250 Mph
  • Range In: 0-215 Kts
Weight 0.800 kg
Dimensions 30.48 × 15.24 × 15.24 cm

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