Just retrieved a 1520 tank from my darkroom:Originally Posted by Flotsam
Inside diameter = ~ 3.80"
Inside Depth = ~ 3.75"
I have a couple of unidentified JOBO reels ... their outside diameter is ~ 4.75" and the Inside diameter of the "spindle hole" is ~ 1.0".
I don't know exactly what JOBO tank they are supposed to fit ... I picked them up at a flea market. They cannot be used in either the 1500 or 2500 series tanks.
Hope this is of some help.