Weaver-Style scope base - dimensions??

[Smitty in CT]

I am making a boresighting fixture for an aircraft, I want to mount one of my old scopes to the fixture. I'm going to need to machine a bracket and need to know what the dimensions of a standard "Weaver-Style" scope mount are.

Can someone please direct me to where I can find a fully dimensioned drawing for a "Weaver-style" scope base??

I am looking in particular for a 3-veiw lay-out type of drawing.

Anyone know where one of these exists without having to start from scratch??

Any help would be appreciated.

Thanks,