(SOLD) Here is a neat old vacuum/motor-minder gauge, which works great. Nice overall patina, too. It doesn't look like a unit that would normally fit into a standard dash panel, so you'd probably have to make a bracket to hold it wherever you want to mount it. The face, including the bezel, has a 2-1/8" diameter. I have a similar one mounted on my trans hump. Ya gotta love it. The price is plus shipping, which would be $7 USPS Priority Mail with Tracking to the lower 48. PayPal would be best, but a Postal Money order would work as well. The first P.M. committing to buy gets it.