I've got myself an old Pentax spotmeter - possibly an original, I know it's from before the III. It's one of the ones with the 9v + another battery.
Now for my confusion: everything says it's an old mercury button cell. Before I go out and buy a Cris adapter or some hearing aid batteries, I've got to make sure. The compartment seems WAY too deep for a button cell - it's over 1/2" deep, covers up the 'n' in Energizer on a AA battery (attached picture)!
Bookmarks