Quote Originally Posted by jamie young View Post
the lense axis "d" goes through the camera back. The small gear center is offset from it. The distance is the amount of offset from the axis line " D" measured at a right angle from "d" The image you show is a side view which doesn't show the measurement needed. A top view would be better.
So, you say, in a top view would be like this ? The distance among D and H ?

Don't know about the #28 but it's probably a manufacturing #, not the pitch number. Your pitch is 32
Yes, you're right: #28 is just a catalogue #. Amusing .....

Thanks a lot !