Originally Posted by fstbttms
Your diver should have been able to not only figure this out, but to supply the anode as well. It ain't rocket science.
I had the same thoughts....if diving/replacing zincs enough....unless completely gone....should be easy to guess as there aren't that many transom zincs.
Mine are tricky but one of the few that arent easy....the spacing is for mini-divers but the bolt diameter is about an 1/8" to large and requires a slight drilling/routing to fit. Maybe something else will fit but nothing I have tried locally and my marina does make zincs available inexpensively.