Rifle Scopes Need a measurement from a NightForce 12 - 42 x 56mm Benchrest

[-Snyper-]

I need a measurement from a NightForce 12 - 42 x 56mm Benchrest scope. I specifically need just the measurement from the outside diameter of the rear eye piece. I have to build an eye piece extension for someone that'll be using the scope as a spotter. If someone has this scope and a cailper, the measurement would be greatly apperciated. Thanks in advance.

 

[dieselten]

The eye piece tube is 1.595. The actual eye piece that threads into it is slightly smaller

 

[-Snyper-]

Awesome!! Greatly appreciated.