BKL 12-Way Scope Bubble Level, Fits 1" dia. Scope Tube

Gives a lot of options for mounting which on occasion is necessary. Good quality.

As one reviewer had mentioned, the screw holding the level is a fraction too long. Even though I had read that, I forgot and put a scratch in my scope. I made a small rubber washer to take up a little space rather than shortening the screw. It's hard to understand that BKL hasn't corrected that,

I think its a little pricey and there are others that are much cheaper. If your set up will allow use of one of those, they may be a wiser choice.

It can be setup with the bubble even to the line of sight, that way when looking through the scope with both eyes open the bubble is directly in front of your other eye eliminating any need to look back and forth from sight picture to level.

Maybe a bit more robust design. It doesn't seem frail but I'd be worried about banging it up, mostly with the level out and not folded flush to the tube but the simple solution is to keep it folded away when walking through brush or whatever you're doing

Set up a mirror about 7-10 yards away and align your scope to the bore ( the crosshair should run right through the center of your muzzle and scope ), then to set your level aim at a ceiling fan chain and line up your vertical line with the chain, adjust the level as needed

Levels out the scope

Screw on thread needs to be shorten by a mm as to not poke thru and scratch the scope tube. Use the higher mount to avoid this.

It mounts easily, and holds firmly to my 3x9-50 scope on a RWS 350; getting the scope to shoot accurately is nearly impossible if the scope is not level on a level rifle. This bubble is always there to show me if I am holding level with the scope and rifle on target.

Nothing, rock solid product

Be patient when mounting this on the scope and leveling it, do it properly and you will never have to adjust your scope again once you have it sighted in. The perfect tool for bulls eye accuracy.

Well built, easy to install, good value for the price

Nothing

If you want to get rid of scope cant this is the item to install. It well improve your accuracy with a constant sight picture through your scope.

It cost alot less than the US Optics level I biught for my 338 Lapua mag It works just as well so far on my RWS 470TH and in sone ways better because of the different possible mounting positions.

nothing

Buy it "cant" makes a different in air guns just on a smaller scale just as it does for a 1000 yd rifle