Find plumb, level &45 even faster with larger, 1/2" vials &"SurroundView" vial surrounds that reflect ambient light in dim environments. This level's solid aluminum frame is highly durable to survive even the toughest jobsite abuse. The top-read window lets you view the level vial easily from any angle, &the "GripTight" rare earth magnets hold to flat or round ferrous metal surfaces for convenient, hands-free use. USA-made vials.