something happened that i was not expecting...I just bought an old film camera to use when i dont want to mess up my f3. it's a nikkormat FT. unfortunately, i didn't know it took mercury batteries. I probably wouldnt have bought it then. I'm having a very hard time finding a 1.35 or 1.55 volt battery (1.35 would be better) that would fit it and work. we tried one, but it wasnt mercury of course (we were told at a shop that you dont HAVE to have mercury) and it was too small...didnt work. now i cant tell if the battery didnt work or the meter is bad. help. please.