Spectra Precision LL100N Self-Leveling Rotary Laser

Specifications Laser Only Accuracy: ±1/8 inch at 100 feet (3mm at 30 meters) Working range: up to 1,150 feet (350 meters) diameter with detector (sold separately) Self-leveling range: ±5 degrees Rotation speed: 600 RPM Laser type: 635-670nm, Class 2 (IEC 825-1), <3.4mW Battery type: 4 x D-cell alkaline batteries (included) Battery life: up to 80 hours Operating temperature range: 14°F to 122°F (-10°C to 50°C) Water and dust resistance: IP54 Dimensions: 6.7" x 6.5" x 8.7" (17cm x 16.5cm x 22cm) Weight: 5.9 lbs (2.7 kg) including batteries. Product DescriptionThe Spectra Precision LL100N is a self-leveling rotary laser designed for use in various construction and surveying applications. It projects a highly visible laser beam, which can be used for a wide range of indoor and outdoor leveling tasks, such as setting foundations, footings, and slabs, checking elevations, aligning pipes and fences, and grading. The LL100N is easy to set up and use, with a simple one-button oper