3 ways to measure: plumb, level & 45 degree angle. The 8' locking tape measure has the standard & metric measure, as well as the rulers on each side of the laser. The tape measure is 1/2" scale with 1/32" increments. There are horizontal & vertical laser markings with a power on/off switch to save battery life. The laser is a class 3A laser & comes with three LR44 batteries, 4CP imprint & doming included in the price. 1.125" W x 7.5" L x 3" H
