I've just been looking inside my instrument binnacle and observed that the guts of my temp gauge and fuel gauge look the same.

Does anyone know if I can use a fuel gauge as a substitue for a temp gauge ?

Reason I ask is that my temp gauge has gone to heaven. The needle keeps wanting to point upward. Even when I tip the whole thing upside down, the needle moves so as to point upwards.


Anybody? - Thanks in advance.