It looks to me like you have a mini Speed Graphic. I have one too. The most practical answer is to get a roll film holder. It will use 120 film. They come in three formats. The most common two are 2 1/4 by 3 1/4, essentially the same size as the sheet film used by the camera, 8 exposures/roll. The second is 2 1/4 by 2 1/4, 12 exposures per roll. You will need a new mask for the viewfinder since the negative size is reduced. The third, and less common is 6cm by 7cm, 10 exposures per roll. I am not certain there are viewfinder masks for this size. I haven't been able to find one. I have all three. The advantage, obviously, is that you don't have to deal with loading or developing sheet film in holders. The disadvantage is that once you mount the roll film holder, you lose the use of the ground glass back. Also, finding the fittings for the roll film holder on a Mini Speed Graphic with the old spring back can be a challenge. But you can jerry rig something.
Anyway, the camera is fun to use. I've had mine for about 50 years.
Remember the old press photographer's advice: "f8 and be there."
Hello Barbarian Take some 5x4 and process three sheets at a time in a 120 film tank. Only one problem, the film is slightly wider than the tank and you end up with a stress mark down one edge. I cut-up one of those plastic table mats into strips 5.1/4 X 3.3/4, using elastic bands so they held in a taco shape so each sheet of film can slip in.
You can also give the camera a first try by using photo paper ( with the wooden plate holders ). I did that with my large format camera. A simple and efficient way for a first test. The ASA of photo paper should be around 12.5, still good enough for daylight if the objects are not moving.
Another idea ... but frankly speaking, I never tried it and would like to know myself if and how it works ... instant film ( like polaroid ). That would probably be the simplest solution at all.
I have my dad's 2 1/4 x 3 1/4 Speed Graphic and I have a 120 roll film holder for it. It fits in place of the spring loaded back for cut film holders. That was a fairly common accessory for the small Speed Graphic so it should be possible to find one. Cut film (if available) is easy to develop but 120 roll film is even easier. They also made film packs for the Graphics. The packs contained a number of sheets of film and you pulled a paper tab out to pull the next piece of film into position to make an image. The film in the packs was thinner than regular cut film and messier to develop.
I just found a 120 rollfilm holder. But the camera has a spring back. I removed that, (including the ground glass) and the holder fits neatly into the space. But nothing holds it. I guess I can fabricate something to hold it, using the screws for the springs, but are those screws set in wood or metal?
I don't want to make the conversion permanent, or to damage the original functions in any way. Any ideas?