Motometers
by John & Henri Boggs.

Boyce - Dodge Dial Insert.

A 3" diameter Boyce motometer with a Dodge dial insert.  It is mounted on a brass, nickel plated flip-top cap.  The dog-bone has green marble balls at either end.  Most of the plating has now worn off the cap, but it is a good example of the different types available to the motorist of the day.