Attributes . Bubble Level, Professional Grade with Bending Offset Aid. Mini torpedo design with handy no-dog attachment for bending. Three rare earth magnets provide superior holding strength. Four vial design - 0°, 90°, 45°, and 30°. Machined from aluminum alloy and anodized to aircraft standards. Compact size fits easily in tool pouch. V-groove on bottom for mounting on curved surface. . Names