360 deg. digital measuring. Dust and waterproof. Display always reads upright. Select from 5 mode reading (degrees in 1 or 2 decimal points, percent, feet and inches in decimal, feet and inches in fractions, and mm/m). Audio alert. Certified vail accuracy. In top read position: 1/32" over 72". Digital accuracy tolerance: At 0 deg., 90 deg.=+.1 deg., and 89 deg.=+.2 deg.. Removable endcaps for flush measuring into corners. Patented, epoxy-locked vial system. Includes carrying case.