Technical What’s this speedo from?

Need to know what cable it takes to figure out if I can use it. Face is about 2”, mount holes are about 3 3/8. Any help is appreciated?

 

no idea what is from , but with those female threads i'm thinking a `35-`48 ford speedometer cable would work

 

Take that patent number and insert it here.
http://www.google.com/advanced_patent_search

 

a long time ago. But it is really cool some one will know

 

Well, I figured out it must be 30-31 Model A. The fact I didn’t know that just shows how little interest I have in Model A’s. I’m surprised I didn’t get a thousand replies.

 

Model A. HRP

 

I see your faster than me. HRP