You could also just line the entire wall with DTEC so the needle doesn't jump around, but it is a cool idea.
I think the gauge's colors should be from red to green. Or if you want it to be from red to blue, it should be red, yellow, green, blue.
"Sometimes the simple things are the most difficult to achieve."
UltraCheesyPies: Only fool will call gauge as "tank".Yes i fooly understand.
you fool, you spelled fool as 'fool' on your fool tank! you know what im saying? ;)
So simple yet so genius, like i can imagine hundreds of uses of this