mamiya c330 depth of field scales

[goldenimage]

i found the depth of field scales for the various lenses of the mamiya c330 system, i have 2 lenses, the 65mm and the 180. i cant seem to get anything out of these charts, the charts i saw have feet scale going across the top, aperature down the side. could someone please explain how to read this chart,,, thanks in advance

[dang]

A good review of these old guys can be found here: http://photo.net/equipment/mamiya/tlr#
You'll find some information concerning dof, and other things which I think you'll find helpful.