Engineering Level, Mounting Leveling Tool with Magnetic Base and Adaptable Design for Scope Mounting, Gunsmithing, and Maintenance, Color may vary

These are decent products. Absolutely worth the price. If you want "perfect" alignment, I would advise the more costly Wheeler Professional Reticle Leveling System. That would ultimately result in "more level", but for half the cost, these smaller levels worked GREAT!

Finally got this out to mount a scope and was very happy with the quick and easy leveling this allowed me to do. Functions well, the scope bubble is easy to read, and it seems to be pretty durable. The magnet is strong enough to keep it in place, as well.

This is really a pretty simple product that's pretty simple to use. Find a level place to reference from on the receiver, preferably across the bore or as close to it as you can get.. find a level reference on the scope most likely the top turret.. apply some common sense, make the gun level and then match the scope to it. In my mind rating this product just boils down to accuracy and build quality. I saw several reviews claim their copy was not accurate and the two didn't get common readings. I took a new quality (not cheap) 24-in carpenters level layed it across my dining room table and shimmed one end with a few pieces of paper for a perfect level reading. Then sitting both the wheeler scope levels on top of the Carpenters level they all three got the same perfect reading. So for me there's no complaints with accuracy, they appear to work as they should with no issue that I can see. Build quality to me doesn't seem to be the best or what you might expect from Wheeler. Lightweight molded plastic frame and plastic bubble vials. I think it'll will do what I need to do if taken care of and put away and kept protected with my other gun tools. Nothing really wrong with them they just seem closer to $6 or $8 than the $13 to $14 I paid. I've seen buckets of tiny level keychains at box store checkouts for a couple of dollars and they seem very similar but they are accurate. I'll agree with another reviewer that the most accurate approach is probably to level the gun and then set up a weighted plumb bob a few yards away to align your vertical crosshair with. That's the way I've always done it and probably always will since it's always worked well. Plan to just use these wheeler levels to level the gun because I'm tired of balancing 9-in torpedo levels and taking up valuable storage space in my gun toolbox. Ultimately you're trying to level the crosshairs and this way you're working with the crosshairs which is way more important than the body of the scope. I'd say if you use them all the time maybe look for something a little nicer and if you're a weekend hobby shooter like me they'll do the job and there's no point spending a lot more money.. I've got many other wheeler products that have served me just fine.

Glad to get this is really good to use when mounting scopes as designed

The very same day I received these tools, I walked straight into the bedroom and went to work. I began leveling my work rifle’s scope, then putting the proper torque on the scope ring screws. I then took that same armalite rifle and began to shoot: 3 shot, 1-inch groups at 100 meters with cheap ammunition. Never been able to do that. This wrench HELPS. Outstanding, no telling what this rifle will do with expensive ammunition now.

I purchased these bubble levels at the same time I purchased the Wheeler Fat Wrench. I bought the levels to try them out and to see how useful the bolt raceway level was in helping to get the scope square with the rifle. I've rated these products with a 3-star rating: the bubble levels are OK but in terms of applying them as recommended I doubt their efficacy. I shoot rifles at long range and it is absolutely critical that the scope is square with the rifle and that the rifle is held square with the Earth. The reason is simple: when the scope is adjusted for elevation and the reticle is moved downward to elevate the muzzle for farther distances it must move exactly vertical. If it drifts right or left the shooter inadvertently holds respectively left or right thereby inducing an unintended windage factor. In looking at the two bubble levels, the idea here is that one level sits on top of the elevation turret knob to level the scope and a second level sits perpendicular to the bolt raceway in the receiver. The theory is, apparently, that if the top of the elevation turret knob matches the level in the receiver, the scope will be square with the rifle. Well, maybe. But what about getting the rifle square with the Earth. That takes a third level which will have to be clamped to the scope and have the same level as the other two. I prefer not to have a bubble level sitting on top of the scope tube. It is extremely visible as well as being ugly. I prefer a scope rail mounted anti-cant level so my focus is on getting the scope square with the Picatinny rail and not with the bolt raceway. If the anti-cant level on the Picatinny rail is level and if the horizontal reticle is level with the Picatinny rail, then the likelihood is that the reticle is square with the Earth. So I only have to deal with making sure that the level on the Picatinny rail is in fact level with the Earth. Then the task is to ensure that the scopes reticle is square with the Picatinny rail. Leveling the rifle for shooting, therefore, involves only deploying the anti-cant device on the Picatinny rail with the knowledge that the reticle movement is precisely vertical to the Picatinny rail which is itself level with the Earth. Would I buy these bubble levels again? Probably not. The small bubble level used for placing on the top of the elevation turret cap is a good size and useful in a number of places and scenarios. The magnetized bolt raceway bubble level is, however, limited to its purpose and is therefore less useful in my view. But both levels are encased in plastic and while some effort was made to square up the one to be used in the bolt raceway, these levels are not, in any sense, machinist grade or even high grade products. But they are useable and hence the 3-star rating. They are OK. I would like something a little more precise in manufacture. Edited 12 July 2013: I forget that precision long range shooting is sport with relatively few participants and that most tools of this sort are not geared to this level of precision. Using a level, even a very good level, across the top of the elevation turret as shown in the product picture is not a precision way to get a scope square with the bore, but it is very acceptable for hunting scopes where targets will be under 400 meters. Therefore, if you are looking to get your hunting scope square, then these levels will work just fine as shown. (An alternative would be the Starrett 135A bubble level.) However, if your ranges require elevations of 10 MOA/3 Mils or more, I wouldn't depend upon this product nor the method of leveling shown.

I can never get a scope mounted squarely by eye alone. Every time I look through the scope the crosshairs don’t seem quite right. I used this kit to square up a scope on my sons 308 and it worked very well.

Poor quality

Does the job designed for 👍

perfecta ayuda para montar un visor

Zum Einstellen von Zielfernrohren eine nützliche Sache. Aufpassen: Eine solche Wasserwaage bringt nur etwas, wenn man sie auf dem ZF auch WAAGERECHT zB am Verstellturm befestigen kann! Wenn der Verstellturm gewölbt ist, geht das nicht. Am besten vorher das ZF genau dahingehend überprüfen.

Delivery Arrived early product is good quality.

Placed on the same level surface bubbles read different.....