Review on 📸 Effortless Picture Hanging with the 10X10X29mm Square Measuring Kit by Jeremy Flint

Check for accuracy before use! Out of the 10 planes in the pack, 3 were wrong when placed on a high precision plane. This is because the level body is cut at a very small angle and not parallel to the inner body of liquid. Place them at a level you trust and compare everything before using those levels and trusting your results.