Brownie and similar cameras

umm @ pinhole_dreamer a model 2A takes 116 film..... A model 2 takes 120. Your numbers will not line up. But it will still work

EDIT OOPS you have a work aroudn so COOL!! I mis-read your post

I've a growing collection of No 2 Fs. Does anyone have an exposure chart - shutter speed and f stops? Example in the link from the beach this summer.
(there was a url link here which no longer exists)