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Easy, accurate scope height measurment Print
The Basics
Written by cmshoot   

 

Here is an easy, accurate method for scope height measurement:

 

  1. Mount your base to the rifle.
  2. Stack washers (or pennies, nickels, quarters, etc) in even stacks on the mount about where your rings would go. Build the stacks up until you get the scope at the ideal height that you want.
  3. Take one of the washer stacks and measure the height (preferrably with calipers).

You will now have your ideal saddle height (top of the base to the bottom of the scope body or tube). In the accompanying photo, that is height "B".

You will want to purchase a set of rings with a "B" height as close as possible to what you measured from your stack of washers


When purchasing your rings, if they sold using height "A" (top of base to center of ring) then you will need to:

  • Add .5" to your washer measurements if you have a 1" scope tube
  • Add .59055" to your washer measurements if you have a 30mm tube
  • Add .66929" to your washer measurements if you have a 34mm tube
  • Add .688975" to your washer measurements if you have a 35mm tube


Alternatively, you could subtract those numbers from the "A" height of the scope rings manufacturer's specs and that would give you the "B" height, it'll work either way.

Attached Image