JLT1050 Features: Big J magnetic HD aluminum level Powerful griptight magnetic edge with rare earth magnets hold to ferrous metal surfaces Oversized solid aluminum frame is jobsite tough Machined working edges assure maximum accuracy Quik-change replaceable cover plates and vials for in the field service Oversized top-read windows for easy viewing Surround view vial system for enhanced readability Vial surrounds reflect ambient light for easy read in dimly lit work environments Oversized anti-slip/anti-shock end caps protect frame Rubberized cushioned hand grips Dimensions: Oversized 0.5'' diameter vials are easy-read Dimensions: 48'' H x 2.75'' W x 1.19'' D