BKL's 12-way level eliminates canting error long range shooters often encounter - and helps with zeroing as you can be certain the scope is dead level.
The level is easy to install and attaches to any 30mm scope tube.
Position the level vial above, below, or off to the side for shooter preference.
When not in use the level conveniently folds for transport.
About BKL - Made in Texas, USA
BKL Technologies, manufacturer of the largest selection of airgun and rimfire scope mounts in the U.S. Our competition-grade scope mounting system includes scope mounts, scope rings, dovetail to weaver adaptors, and scope risers that utilize a quick-installing and self-aligning clamping system that fits both 11mm and 3/8" dovetails.
BKL mounts are compatible with popular rimfire manufacturers such as Anschutz, CZ, Feinwerkbau, Marlin, Remington, Savage, Suhl and air rifle manufacturers such as Air Arms, AirForce, Beeman, Benjamin, BSA, Crosman, Daystate, Diana, Gamo and Webley.
See http://www.bkltech.com/ and ask us about any other BKL products you'd like to get hold of.