So I searched through the archives and was reading some post about the Autometer Tachs. I came across an interesting one that said you have to send the tach in to be calibrated for out 420a's. Now my question, I was checking out optauto.com and I saw that the autometer gauges have "Dial-in-Exactness." Is sending the tachs in for calibration still an issue or has this "dial-in-exactness" resloved any reason to send the tach back to autometer? Thahks for the help.
