18mm x 9mm Circular Bubble Spirit Level BY GFNT for Tripod, Phonograph, Turntable Etc. (4 pack)

These are exactly as I expected. I machined a brass housing with a threaded rod underneath and glued the bubble level into the top. The resulting part looks like an oversized thumscrew and will fit the 1/4 threaded hole on top of a video camera, allowing the camera operator to check if the camera is level no matter where it is used.

Perfect for what they are. They do the job quite well to help my level my turntable plinth. My only complaint is I'd rather have two slightly larger ones, than four teeny weeny ones.

These are great little handy levels. I have no complaints and they fill my needs perfectly. I was concerned that the base is hollow and I thought a filled flat would be better but after using them there are no issues.

I bought these to level a Tripod that didn't come with one. While there is no substitute for leveling in frame, I frequently shoot from irregular surfaces and getting close with leg adjustments is a huge time saver leaving only minor tweeks to achieve good results. It is not true that these have only two positions, level or not. They are small which makes change dramatic, but it doesn't mean that when you are close you can't tell if you need to make subtle adjustments and which direction to make them in. And level is level, they don't lie. If you have another application like a Turntable they may be insufficient but my advice would be to get a bigger one. I can throw these in my camera bag and they take hardly any space at all. My only beef is that they come in a 4 Pack and all I need is the one. Hey, 6 bucks is 6 bucks- I can get 4 Bacon Cheeseburgers for that.

I bought it for the purpose to attach it to my cordless drill for plumb, vertical drilling and it does the job. This drill had a horizontal level, but I use it more often for vertical holes. As for accuracy, I originally gave it 4 stars, but for the application and size it warrants a 5 star rating. There are new drills with a LCD level read out for both horizontal, vertical and even distance and depth, the cost much, much more than the extra, less than $10, of the three bubble levels and still only drill holes, besides my drill still works fine.

Suitable for the price. Not very accurate independently, but I leveled my devices, then mounted them in silicone adhesive, adjusting until they showed level.

I had alot of tee fence posts to install, i use a 1"1/8 x18 bit to predrill into the earth instead of using a slide hammer on sledge which is plain crude and not easy, but my sds hammerdrill didnt have a plumb level on it, so i siliconed one these levels on my sds drill when it was plumb with the bit in a vise, so happens it worked excellent and as i was drilling i could watch to make sure i was drilling plumb for each post hole!

Handy for a rough measurement, but a little small for any degree of precision.