Review on UBEI Shatterproof Multipurpose Furniture Construction by Lance Harrison

Bought 2 sets. I'm glad I did. A set is fairly accurate, but the lines are very far from bubbles. The other cleared away the blisters. I've marked this set with a flat surface so I know where the plane actually is. Quality control needs to be improved. I like the design. Very convenient. They are easy to read and light in weight.