Reply To: What is your favorite bubble level?

Forums Optics, Scopes, Rings, & Mounts What is your favorite bubble level? Reply To: What is your favorite bubble level?

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nervoustrig
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I'm not saying it's impossible to set up a rail-mounted level correctly, but in many cases it will require shimming the dovetail to introduce some rotation to it.  There are about a half dozen sources of alignment error that renders the receiver out of square/level with the reticle & bore combination.

The more unfortunate thing is that most users will simply fasten it to the rail and assume they can use it to indicate level and that will almost never be true.  Whereas a scope-mounted level can simply be rotated about the scope tube to achieve the proper alignment.