BL30 Vortex Optics Bubble Level 30 MM Tube
For the most precise long-range shooting, use the bubble level to ensure that the rifle is perfectly vertical. This will eliminate potential error caused by shooting a canted rifle.
Mounts quickly and easily to the riflescope tube.
|Outside Diameter (inches)||2.2 - 2.4 inches|
|Outside Diameter (mm)||55 - 61 mm|