Panavia Tornado Aircraft Fuel Quantity Transmitter

This is an Aircraft Fuel Quantity Transmitter (also known as a Fuel Float Sender), and it originated from a Panavia Tornado.
Specifically, this is the internal mechanical assembly that lived inside one of the Tornado’s fuel tanks. This is the sensor that told the pilot how much fuel was left in the tank.
The Details
• The Float: That "cork-like" cylinder at the bottom is actually a fuel-resistant composite float (often referred to as a "nitrile" or "cork" float in vintage contexts). It sits on the surface of the fuel.
• The Arm: As the fuel level changes, the float moves up and down, pivoting the long metal rod.
• The Transmitter Head: The large metal housing at the top contains a potentiometer (a variable resistor). As the arm moves, it sweeps a wiper across a wire-wound resistor, changing the electrical signal sent to the cockpit gauge.