Handheld 4.9 x 2.2 x 1.4 in. Disto Model A2 provides measurements within 1/8 in. at ranges of 197 ft. Keypad includes shortcut keys for addition and subtraction as well as area and volume calculation. Illuminated display and red laser dot can be seen in low-light conditions, making it easy to take measurements of out-of-the-way locations. Stake-out function measures out constant equal distances such as studs or wall frames.