Hi,

I have a big green outside oil tank (Home heating etc).

There is a clear thin tube on the outside, with a small floating ball in
which is supposed to be indicative of the amount of oil left in the tank. At
the bottom of the small tube is a button you press to sync the tube with the
tank.

It no longer works and I have no idea how much oil I have without looking in
the tank.

Does anyone know how to fix this problem OR is there another method to help
me?

Thanks

Paul