The Stabila 80101 is a 3-pack of Masons Brick Rulers. The rulers fold for easy storage. They also have hardened steel springs, fully sealed rivets, and are reinforced with fiberglass for durability. The beech wood segments of these rulers are weather and abrasion resistant for unlimited use. The 80101 comes with a certificate of accuracy so you never have to worry about the quality of your measurements.
(3) Type 600 Folding Rulers with Mason's Scale
Measuring and Scaling