Review on Precision 10x10x29mm Picture Measurement Tools with Hanging Capability by Brian Foster

Small size makes it easy to use on small items and in tight spaces. Not exactly in every way. It is necessary to find a side that exactly matches a known flat surface and mark it for future use, otherwise it will not be flat when used for leveling. Below is a photo taken on a known flat surface. Everyone has a side that is close to the level. It remains only to find it and mark it for future use.