The Savage Aluminum Torpedo Level is a great & handy lightweight tool – perfect for contractors & electrical & plumbing professionals. Made of precision-machined, solid-billet aluminum alloy, anodized for maximum durability. The four-vial design incorporates Swanson’s exclusive Brightview milled vial ports that capture & reflect light for increased readability & accurate measurement of 0°, 30°, 45° & 90° angles. Top-read viewing windows offer an easy, straightforward view of the 0° & 30° vials. Laser-engraved SAE & metric rules are prominent features of both levels. Rare-earth, neodymium magnets – considered to be amongst the strongest in the world – have also been integrated into the levels’ design to provide maximum holding strength while out on the job.