Smith is a good gauge.
Try one of the cobra car companies. You can also try Ebay. Then there is the internet in general.
Do a google search for smith gauge.
You may be able to find a shop that will check out your current part.
Gee, you got the car for free and already you need to work on it. You better watch out, you are going to end up like the rest of us.
Well, good luck.
