Review on 📏 Accurate Measurements Made Easy: Introducing the TIPU Tipu Bevel Gauge by Christopher Bates

The circle at the end of each wedge is too large. Most of the edge of the earth ends in a circle, and it's not enough to reliably measure the angle. You can find a wedge where the bottom appears to be parallel to the other edge by looking perpendicular to the gauge and aligning the tip of the sharpener with one edge of the wedge. This gives you an idea of the angle, barring aiming/parallax errors. This is better than aligning the edge with a straight object and making a deduction, but it would be far better if you could just insert the cut into the wedge and read.