Earll Catchers & Retrievers

[Kenneth Josephson]

Here's one for the technocrats on this list.......

Greg King may be willing to provide me with some mounting rings for the
Earll catchers used on the Melbourne trams. Are these rings the same
size for both Earll catchers and retrievers? I need some of these rings
to mount my Dayton retrievers on the wall in my traction room, er, our
den.  Ken J.