Had a bit of a break through.
The AOB wheel was driving me nuts in this mod but was really my fault.
It is after-all, just a relational slide rule.
See the attached image.
One should be able to find the distance to target (assuming a 6x power scope) in this example...
#1 matching a 25 meter target to 10 (where this is really for the purpose of this slide rule exercise the 100 mils mark.
Then go to #2 and read the distance.... where 10 for this purpose = 1000 meters away.
Checked out against various numbers with Hitman's chart supplied with his first periscope mod.
My problem not understanding this Mod and the AOB wheel was because:
In the old UJag Mod and Manos Mod.... one would start out at number #3 and get the result at #4.
Still some work with this as it is like any slide rule, search for the right relationship of numbers to substitute.
So, once we get the mills right for the scopes (for 6x) we should be on easy street.