Need help IDing this gauge.

I been trying to remember what this gauge fits but I'm drawing a blank. I could use some help. I'm thinking it's an early 70's Buick maybe a Grand National? Thanks for any help you can give me.

 

Here's a closer view.

 

bttt

 

bttt, somebody's got to know what this fits.

 

I can tell you," it doesn't fit your yellow rod"

 

bttt hey! it's getting lonely here on page 14. Somebody has to know what this gauge fits.

 

Are you sure it is automotive? It LOOKS like something that might have been in a tractor or piece of heavy equipment.

 

it's something fishy i'd guess... look for things that run 18 volts and you might narrow it down...

modern military is 24 volts so i'll rule that out for you...

 

scratch that... it could still be for a 12v system i guess... but i'm guessing marine application

 

It is out of a GM car. It came in a box full of gauges.
They all have boxes with part numbers but this one doesn't.