[Zeppo]

One more thing in case I have misunderstood your question - if you are looking for dimensions and cross sections of the mounts themselves, rather than the rails, that is something that I have been looking for everywhere, and so far I've come up empty-handed. So if that's what you're looking for, and you find it, please point me in the right direction...

[hophead]

"...cross sections of the mounts themselves"

Yea. Whether the receiver on the scope or other sighting instrument or the rail on the handgun. But I am sure if I found either item it would have both as 1 drawing. I see the Weaver seems the most popular.