Center distance between scope and barrel

[928487381]

fx impact mk2 X 700 . 25(Original 700Mm.25 Shroud + Donny Ronin .25)

Delta 4.5-30X56Mm （Without lens cap）（Pipe diameter 34MM）

Vortex Optics Precision Matched Riflescope Rings（34MM-1.26in）

Sorry to bother you. If you have time, can you help me calculate the center distance between the scope and the barrel? Thank you very much for your help

 

[cmatera]

https://www.airgunnation.com/topic/scope-height-and-how-to-calculate/

 

[928487381]

thank you for your reply.