Stewart warner tachometer. I'm looking to get an idea of the value. In all my research, I have not seen a 3500 rpm tach that goes right to left. I would love to know what this goes to and why it's right to left. Thanks!!
Goes on a twin screw boat. The older boats, one engine turns right and the other left. My 1960 Chris Craft was like that. Twin 283s never turned more than 3000 rpm.
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