Weaver scope level system - Weaver Gunsmith Modular Level System

I have used this to mount a Bushnell banner scope on a Siga 6.5x55 Mauser. The magnets can be moved into a variety of positions to attach to a suitable vertical or horizontal part of the receiver. Once the rifle is level the second level can be placed over the top turret (after removing the protective cap) and then the scope can be rotated until it is level as well, then is a matter of just tightening the rings. You can watch the level as you do this so that the tightening process does not move the scope off level. Only issue was with the Banner scope which has a small plastic knob raised in the middle of the adjusting ring for you to grip as you are making your adjustments. Luckily this had a small screw in the middle of it that the magnet could latch on to. If you want to make sure your crosshairs are level with your rifle this is a simple cost effective way to do it.
Pros: Simple and versitile
Cons: Not so easy if the adjusting dials on your scope turrets are not flush on the turret housing

This review was written in the old system and had content requirements that are different than reviews written today.