
Spectra GL622 Dual Grade Laser
Specifications Operating range: Up to 2,600 feet (800 meters) diameter with detector Self-leveling range: ± 25 degrees Grade range: -10% to +15% Grade resolution: 0.001% Rotation speed: 600 rpm Accuracy: ± 1/16 inch per 100 feet (± 1.5 mm per 30 meters) Battery type: Rechargeable NiMH battery pack or alkaline batteries (4 x D-cell) Battery life: Up to 40 hours with NiMH battery pack, up to 60 hours with alkaline batteries Operating temperature: -4°F to 122°F (-20°C to 50°C) Dimensions: 7.8 x 9.6 x 8.3 inches (19.7 x 24.5 x 21 cm) Weight: 7.3 pounds (3.3 kg) Compatibility: Works with the Spectra Precision RD5 laser detector (sold separately) SpecificationsThe Spectra Precision GL622N Dual Grade Laser is a comprehensive package that includes everything needed for a variety of construction and surveying applications. The GL622N is a highly precise dual grade laser with a range of ± 25% in the X and Y axis, making it ideal for site preparation, earthworks, and grading projects