Air core gauge

Hey kiddo! Do you know what a gauge is? It's a tool that helps us measure things like the temperature or how fast we're going in a car.

An air core gauge is a special kind of gauge that uses a tiny magnet and a coil of wire to measure something like how much fuel is left in a car. When the fuel level changes, it makes a small electrical current flow through the coil of wire. This current creates a magnetic field that moves the magnet inside the gauge.

The movement of the magnet is then translated into a measurement that's displayed on the gauge. Kind of like how a thermometer shows us the temperature.

But what's really cool about air core gauges is that they don't have any moving parts that touch each other. This means they can last a really long time without needing to be replaced or repaired.

So next time you're in a car, take a look at the gauges on the dashboard and you'll know how they work!