Stabila 25200 10-Inch Die Cast Magnetic Torpedo Level with 45 degree vial Fast, accurate, and durable; heavy-duty, die-cast frame is virtually indestructible Vials have a certified accuracy of .029 degrees (1/32-inch over 72 inches) "Rare earth" magnets with up to 10 times the holding power of standard magnets Patented vial system never needs adjusting, three crystal clear, non-fogging, unbreakable, monoblock, acrylic vials (one horizontal, one vertical and one at 45 degrees) Level accuracy guaranteed for life; vials will never fog, leak, or require adjustment