Reply To: Tesla Speedometer

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Ben is exactly right. Tesla and Waltham collaborated on what became the Waltham speedometer. Tesla was issued U.S. Patent number 1209359 on December 19, 1916 for a speedometer. The Waltham speedometer and the Tesla speedometer I have seen appear to be the same. I guess the only question remaining is why the one has the Tesla name on the face rather than Waltham.