Review on 🔧 Accusize Industrial Tools: Precision and Accuracy in Every Detail by Sherman Lancaster

This is my first accurate spirit level. Seems well made and very accurate. I had to calibrate. Place it on the surface and then rotate it 180 degrees and it should come out the same value. It was difficult to find a sufficiently flat surface to place it in the same position (rotated 180 degrees) for calibration. I ended up with a piece of granite. To calibrate, remove the round plug at the end with two screws (top and bottom). It comes with a tool to turn the nut inwards.