Principle and purpose surveying instruments | Jinke Instruments (certified) | surveying instruments provided by the Instrument Co., Ltd. Qingdao Branch. Instrument Co., Ltd. Qingdao Branch (www.qdjk17.com) is specialized in the "mapping equipment, analysis equipment, testing equipment, flow meters, optical instruments, temperature instruments," the enterprise, the company adhering to the "honesty, hard service" philosophy, to provide you with the highest quality products and services. Welcome to inquire! Contact: Li Yongjie. Performance indicators: Effective range: ≥120m (daytime) ≥250m (night) exit power: 1mw to point at the minimum focus distance: 0.5m effective aperture lens: 36mm Magnification: 25X field of view: 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 ~ ∞ world's first section: Set digital laser point tracking (4x zoom) CEM mapping equipment, 2.4 "large color screen, up to ± 45 ° tilt sensor in one of the newly designed laser rangefinder Leica DISTO TM D5 laser rangefinder with a variety of available! Simple measurement functions and features of Leica rangefinder surveying instruments, especially for outdoor work! Digital laser spot tracker built-in digital laser spot tracker is equipped with a 4x optical zoom Set 2.4 "color screen, so that even long-range goal is also very easy to find . Its advanced features make even under strong sunlight can also provide clear, lifelike images through the built-in tilt sensor tilt sensor, you can quickly and easily measure up to ± 45 ° of tilt with the tilt sensor, we can accurately measure the horizontal distance or measuring the horizontal distance over obstacles