Canon F-1 Battery Adapter

A tiny, simple, battery adapter for Canon F-1 and F-1n cameras. Allows you to use a type 675 hearing aid battery with the cameras. Makes the too small battery fit perfectly. Type 675 is also known as ZA675 and PR44. 

Note. F-1 and F-1n have a voltage regulator, the voltage difference between type 675 battery (1.45V) and what F-1 originally uses (1.35V) does not effect the light meter, it remains exactly the same.