Ran across this old thread after a search... My SEIKO SAT100 tuner actually seems to get a half step off when the batteries get "older" or used a bit. This is a problem because one has no way to know when this occurs (other than to compare with another tuned instrument)... in a recent jam session, I found I was playing my bass guitar one fret off from where I should have been (!) - just to match others in the group. I checked against another tuner and, sure enough, all strings were off tune by a half step. Has anyone run across this? Why would Seiko not put a "low batt" indicator to prevent this?
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