Stabila's LD400 Laser Measure calculates length (up to 200 feet), area, volume, continuous measure, square footage, and diagonals with an accuracy of +/- 1/16 inch. It stores up to 10 measurements and has a backlit screen and a metal hook that sets edge points for inside corner and diagonal measurements. A stake-out function helps with layout of equal distances. Price: $249. 800-869-7460. www.stabila.com.