I used it a few times on a watch I got that has a tachymetre scale (Tissot V8) when I first got it. But other than the novelty factor, no, I've never used it.
I used it a few times on a watch I got that has a tachymetre scale (Tissot V8) when I first got it. But other than the novelty factor, no, I've never used it.
Once in awhile you get shown the light in the strangest of places if you look at it right.