Stabilia Type 600 Mason’s Rule
Wood Extend able Folding Ruler
- Hardened steel springs and steel joints
- Fully sealed rivets with weather and abrasion protection.
- For measuring left to right, right to left
- Marked both sides
- To take an inside measurement; open rule to within 6″ or less of the distance
- Butt square end against one side of opening. Extend slide until it strikes other side. Add measurement on slide to that shown at other end of rule for an exact measure of the opening.