Check the listing for details. Johnson Aluminum Rafter Angle Square. Condition: Used, Made in United States. Listed at 4.99 USD. It has a solid, die-cast aluminum body with CNC machined edges, which provides greater accuracy and durability. The square features permanent, easy-to-read graduations and numbers that will not peel, wear off, fade, or smudge. It includes both distance and angle scales. The thick edge is designed to be useful as a saw guide. It also includes continuous scribing notches for marking and ripping lumber. It's definitely not new, but still works like a new one would.