Weaver Scope Rail ID

[dre1x]

I am trying to identify a Weaver Scope Rail
I believe it is for a Remington 700 LA (long action).
I have a Rem 700 LA and it fits the rifle exactly.
I am under the impression these rails are manufactured in (2) configurations: 0 MOA and 20 MOA.
The rail is stamped with the number 442, it is 7 1/4" long.
Can anyone shed some light on whether this is a 0 MOA or 20 MOA.

Thx

 

[Bailey Boat]

Measure the rail thickness where it hits the receiver at the front ring and then the rear ring and do the math....

 

[dre1x]

If the dimensions are the same then i assume it is zero?
I guess by that, I mean, are the mounting surfaces above the bore, parallel and equidistant form the bore center-line on a Rem 700?