The Stabila Rare Earth Magnetic Torpedo Level is built with a heavy-duty, 10-inch die-cast metal frame and two acrylic vials (one horizontal, one vertical) that are crystal-clear, non-fogging, unbreakable, and monoblock for durability and ease of use; the design features 2 high-strength, flush-mounted rare earth magnets which are 10 times as strong as standard magnets for greater convenience and reading accuracy