Hy this is my first post. My qustion is what size bulb can I use in the range finder light? I have shot 120 film in my Speed to see if it was going to work the 2 4x5's came out great. It was a pain to load the film may be nextime it will be better. Thanks.

The service manual list the bulb as being 2 1/4 Volt 1/4 Amp. Any 2 AA cell flashlight bulb with a base the same or clost to the same diamater should work.
Radioshack catalog # 272-1132 , #14 screw base lamp 2.42 volts 300ma should work if you cannot find anything else.
2 AA=3 volts; 1/4 amp= 250ma.

Thanks I will look for them.