It should be calibrated around 80 square inches of film, so 1 roll of 135-36 = 1 roll of 6x6 120 = 4 sheets of 4x5 = 1 sheet of 8x10.

500ml is rated for 6-10 rolls of 135-36. I guess I'd recommend doing the important stuff first and letting us know how the remaining work :-).

-jbl