Rangefinder agent _ Jinke instrumentation (certified) _ rangefinder provided by Qingdao Branch of the Instrument Co., Ltd.. Qingdao Branch of the Instrument Co., Ltd. (www.qdjk17.com) is specialized in the "mapping equipment, analytical instruments, testing equipment, flow meters, optical instruments, temperature instruments," the enterprise, the company of "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Li Yongjie. Performance: Effective range: ≥120m (daytime) ≥250m (night) exit power: the minimum focus distance under 1mw point: 0.5m Objective lens aperture: 36mm Magnification: 25X Field: 1 ° 50 'Imaging: Just as the shortest horizon: 0.8m wavelength: 635nm Power: 2 AA alkaline batteries wavelength: 635nm spot diameter: ≤3mm / 50m FOV: 5 ° Imaging: Just as Magnification: 3X Focus Range: 0.5 ~ ∞ geological compass 1. The main performance instrument needle damping time (needle deflection 90 ° to stay in the original position of the time) for 30-60 seconds. 2. reading error: a) the degree of rotation of the needle before and after the indicated error is not more than 0.5 °; b) needle at 0-180 °, 90-270 ° at the eccentric caused by error of less than 0.5 °; c) of the goniometer reading error of less than 0.5 ° 3. sensitivity level: a) vial for 15 '± 3' / 2mm b) Circular level for 30 '± 5' / 2mm 4. Instrument Dimensions (L × W × H) for 85 × 73 × 35 mm. 5. The instrument weighs less than 0.27kg. Smart rangefinder