Review on 🎯 Enhanced Visibility: 66X10mm Circular Fluorescent Bullseye Inclinometers by Meech Elliott

These levels are easy to read, very reproducible and very accurate; However, as others have noted, they don't come out of the box. The problem is that the calibration marks are not exactly centered on the curved top surface. They are easy to change to achieve very high accuracy. Be sure to use a very flat surface and it's easier if the surface is level. Once you've got the washers in place, you can turn the spirit level and the bubble will still stay centered. I used pieces of tape to run both axles which I then trimmed with a razor blade. I then used UV glue to glue the plane with the spacers to the mounting surface. I only gave it 4 stars because it needs a bit of modification to get accurate readings, but it's not difficult. Overall: Highly recommended!