Indix Lambretta Fuel Gauge
Lambretta Fuel Gauge, shown in litres. Great accessory that really helps when you want to know how much you really have in your tank.
It works by a float rising up inside the tube, and as it rises, it turns the needle.
Don't worry if your tank is larger than 8½ litres, you can use it as an indication on how full (e.g. ½, ¼, etc).