On Sun, 12 Jul 2015 08:56:20 -0700, jurb6006 wrote:

Model number ?

Not known, I'm afraid. And the person who was acting as intermediary
between myself and the scope owner has declared he no longer wishes to
spend a single second more on the issue, so all the suggestions so far
have been passed on to the owner, but no more will be.
Thanks, guys.