Spectra Cross Line Laser LT20

Accuracy ±3mm @ 10m (1/8" @ 30 ft) Visual distance 30m  (100 ft) Laser  - power  - class  - wavelength  - fan angle  - line thickness 2 x 15mw class 2 635nm Horizontal 130° / Vertical 150°  2.5 ± 0.5 mm @ 5 m (0.1 in ±0.02 in @ 15 ft) Power Supply  - batteries  - battery life  - battery indicator 3 x AA 15h-20h Green LED OK, Red LED low power Out of Level Indication Laser beam flashes 3 times every 5 seconds Self Leveling range ± 4⁰  all direction Environmental  - IP  - Operating Temperature  - Storage temp IP54 -10° to 45° (14 °F to 113 °F) -20° to 70° (-4 °F to  158 °F) Drop Specification 1m  (3 ft) Size (l x w x h) 110 x 58 x 104  (4.3 x 2.3 x 4.1") Weight 0.35 kg (0.8 lb)