La bàn lâm nghiệp Warren-Knight

Description 

Double-graduated, 0-360° (Azimuth) and 0-90-0° (Quadrant) to 1°. Declination adjustment 45° East or West, 5’ vernier. Thumb screw needle lock. Cardinal points rotate with graduated circle when declination is set off. 3-3/4” sight folds down for storing. Interchangeable scales on sights enable slope measurements to ±30° or ±60%. Circular spirit level vials mounted permanently on compass face. Offset sights are notched in housing at 90°. Diameter: 4.5”. Height: 1-1/4” (closed). Includes ball and socket joint, Cordura® carrying case, slope measurement scales.