The Stanley TLM 99 True Laser Measure can measure length, area, volume and has continuous measurement or tracking function, which finds distance from a target quickly and easily. It also features a handy addition/subtraction calculator, a convenient way to calculate in the field, using standard measurement units.
Operating Range: 0.1-30m.
Power Supply: 2 x AAA Batteries (Included).
Operating ;Temperature: 0-40°C.