Offered for sale is a speedometer, similar (But not identical to) those used in early 70's Gremlins.   Clean and rust free, the needle moves smooth and steady, and odometer registers mileage when tested with an electric drill.  
Dimensions:
Bezel flange diameter  3.645 inch
Bezel diameter over crimp   3.767inch
This would be great for a rat rod, or even possibly an early 70's Gremlin
If any questions, please don't hesitate to ask.