Fuel gauge pressure decipher

[hershal]

Hey guys
Quick one. I have this cheap gauge I got from an auto store. But I am having a bit of trouble reading the actual pressure.
Obviously the gauge spins clock wise and looking at it I thinks it's reading about 120kpa. Which is 17.5psi approx. which if that's true. Not good.

Would this be right? 31241

[nissannewby]

If im reading that gauge correctly its in vacuum. It should be on the other side of zero for a positive reading. Where did you plumb this to get that reading?

[hershal]

Yeah. It actually went clockwise past the half way mark and went in to the vaccum side. So looking at the positive scale I think it's sitting at 120 kpa positive pressure

[nissannewby]

Oh I get you now. You have probably ruined your gauge then. You will need to get an appropriate gauge to get an accurate reading.

[hershal]

Hmmm yeah probably right. Looks like that gauge only goes to 10psi positive. Probably should of looked at it before I blew the guts out of it.

Anyone recommend a cheapo way. Should I just get a 20 dollar oil pressure gauge. To test