Bubble level ST1006 Attaches to standard Weaver rail base 7/8". This anti cant rifle scope optics bubble level ensures at-a-glance bore and reticle alignment shot after shot Quick and easy viewing. Bubble Level Simply clamps on in front of the rear ring and Insures bore and reticle alignment is square to target. Optics bubble level Improves accuracy by ensuring the rifle is level before each shot. Machined In White line on housing for quick reference. Bubble Level Fits 7/8" Dovetail Weaver Base Rail. Add this bubble Level to your gunsmithing tools and scope Accessories. This bubble level is a simple way to make sure your scope is level at the range for longer range shooting. Body Made Fom Machined Black Anodized Aluminum.
Note: Fits Weaver-Style Base Rails 7/8". Note: You May Want To Buy One For Each Rifle & Shotgun You Have.