Scope tube size?

[frank0587]

I just bought a kimber 84L .270 hunter. How do I figure out what the scope tube size is? 6-18x44 battle zone red field scope

 

[CaneBrake]

Measure with a set of calipers or google. I'm willing to bet it's 1".

 

[Sockeye66]

Midway site says 1".