YOTOM 2x Bubble Spirit Level, 66x10mm Circular Surface Level Inclinometers, Fluorescent Yellow

The degree markings are in the wrong places. Notice that it has labels for 1°, 2° and 3°. You would think this would indicate 1, 2 and 3 degrees from level, right? Wrong! As far as I can tell, these markings have nothing to do with anything.However, notice the series of little short lines. You know, the little line segments that radiate out from the center in four directions. I measured it with an accurate device, and found that these little markings are at approximately 1° increments. Give or take a degree or so (yep, not all that accurate). So the first little mark is actually about 1 degree-ish, the second little mark is about 2 degrees-ish, etc. Up to about 14 for the one furthest out. So the label that reads " 1° ", that's really about 3 or 4 degrees-ish. Where it reads " 2° ", that's really about 8 degrees-ish.Based on the markings, I was expecting the bubble to indicate up to about 4 degrees. But it actually indicates up to about 14 or 15 degrees. Not at all the level of accuracy that I hoped for. If you're looking for accuracy up to 4 degrees, as the marking would indicate, this is not it. I never expected the precision of a scientific instrument for the price and size. But I don't think it's too much to ask for the markings to be in approximately the right place.It works fine as a simple level. If all you need is something that shows if something is approximately level, or shows that an angle is a little more or a little less, this is OK.

These levels are easy to read, very repeatable, and very precise; however as others have pointed out, they are not very accurate right out of the box. The problem is that the gauge marks are not precisely centered on the curved upper surface. It's easy to shim these to achieve a very high degree of accuracy. Be sure to use a very flat surface and it's easier if the surface is level. Once you get the shims right, you can rotate the level and the bubble will remain stationary in the center. I used pieces of tape to shim both axis, which I then trimmed with a razor blade. I then used UV curing cement to bond the shimmed level to a mounting surface. I gave it 4-stars only because it requires a bit of modification to achieve an accurate readings--but that's easy. Over all: Highly recommended!

I use these levels to insure my drones are on a level surface for calibration and they work great. That could mean the difference between a great day of flying and the possibility of crashing your drone. I have been able to use these levels with awesome results. Great product highly recommended.

I am a beekeeper and have many experimental hive designs in my apiary.With honeybees, the hive body must be absolutely level from side to side so the bees draw out their honeycomb perfectly straight in the frames. If a hive body tilts, the comb follows gravity and you have a mess on your hands.Also, when putting on sugar syrup inside a bee hive, the hive must be absolutely level in every direction in order to prevent interior spillage... CRITICAL.I carry these in my pocket and enjoy how large they are 2 and 5/8 inches in diameter!So why not just use a spirit level? Oh, I'll tell you...I also have and experiment with FlowHives and FlowSupers which must tilt back in order to drain honey off. The "sweet spot" for honey draining from these hives is a 2 degree tilt back. These round levels are clearly marked with a 2 degree increment which makes my job extremely easy.I could not be happier with these and have been using them for months as of this review posting.Clear, Accurate, Large, Practical... five stars for sure!

I ll keep it brief as I have only used the product once at this point but I am an independent film maker and often times working on low budget films in the midwest with skeleton crews, I end up having to do some grip work whilst directing a film. I have found it wildly useful to just have everything I need on my belt from bobby pins and C-47s to levels and of course... always a Leatherman! This bullseye level thus far seems very accurate and works great for leveling Camera.Pros: Easy to Read Accurate slim profile yet big enough I can find it quickly when I need it. CostCons: Little too big for application. (2+ inches diameter) Would love this is it had a flush magnet on the bottom

Im and artist and I’m am so glad I discovered this. It is perfect to make sure my wine glass tops are level

This came just as described. I checked it against my 2 ft level and it was right on. Couldn't be happier with this purchase. Now my wife won't have to switch torpedo level around to check X & Y.Don't pay any attention to Ikiat's critical review (and only critical review) the "flaw" described is where the liquid is injected and the air extracted. They have to do it somewhere right?Added after actual use: Worked great for the RV. compact so we just left it on a level counter and could adjust as the RV settled. We had rain etc and it settled a little buy no worry. So much easier. I highly recommend it. Gave the second one to my son. I can't imagine one at a higher price being any better. Happy travels!

I don’t know exactly how accurate these little things are, but they are quite easy to use and give you left/right and front/rear info in a single device. We bought them to level our tiny motor home, mostly to be sure the refrigerator is level. I just put one on the top shelf of the refrigerator and we adjust the leveler blocks until we get it right. Sure don’t want to damage that expensive Dometic refrigerator that runs on battery/solar, generator or propane. Happy novice camper!

It’s simple and a good value for money. It is to be used for levelling up a caravan when arriving on site.

I use this in the campervan when levelling at the campsite pitch. It fits perfectly in the cup holder. Thumbs up for this 👍

They sit in the cup holder and give a good rough idea of how wonky the floor is :)

These are very clever .... and does the job....

True and awesome for telescope star tracker and very big. Ideal for us oldies