Wondering if someone could please tell me, I am waiting for my more expensive Tach to arrive but won't be here for a while so, I'm using a cheaper Tach with a push button on back for setting speed ratio. The instructions are not that great but I'm wondering to get the required speed ratio, what numbers do I use? in the settings it's H-014.9 I have a chart that says 6 poles and for speed ratio 3. Does this mean I have to set it to H-300.0 for it to work correctly? the more expensive ones are easy as they just have a pole selector and this one is confusing me. Thanks in advance
