Total Station use: according to the known two directional coordinates of the points to the total station, then enter the coordinates of the point to put the total station will show the angle and distance, you turn the total station, the display angle is close to zero laser down device, and then took the point away from the prism lens along the vertical collimator display quotes, with total station aiming mirror, point measurements, angle and distance error to see displayed continuously adjusted. Distance error 1-2mm, angular difference + - (1-2) seconds. Laser vertical collimator with optical collimation principle performance indicators: Effective range: ≥120m (daytime) ≥250m (night) exit power: 1mw point at the shortest focusing distance: 0.5m Effective aperture: 36mm Magnification: 25X Field of view: 1 ° 50 'Imaging: As Minimum sight distance: 0.8m wavelength: 635nm Power: two AA-size alkaline batteries wavelength: 635nm spot diameter: ≤3mm / 50m FOV: 5 ° Imaging: Just as Magnification: 3X Focusing range: 0.5 ~ ∞ portable laser rangefinder 40 m 70 m LDM-65 Measuring range 0.05-65 m 0.05-70 m Accuracy ± 1.5 ± 1.5 millimeters 毫米 measuring meters, inches, feet, meters, inches, feet measure history 20 group 20 group Laser class II Maximum output power <1mW II Maximum output power <1mW Protection class IP54 dust and waterproof rating IP54 dust and waterproof rating Operating temperature 0 ℃ ~ 40 ℃ 0 ℃ ~ 40 ℃ Storage temperature -10 ℃ ~ 60 ℃ -10 ℃ ~ 60 ℃ Size 115 * 48 * 28mm 115 * 48 * 28mm Weight 135 g 135 g vertical collimator precision _ Branch of the Instrument (Online) _ vertical collimator provided by Qingdao Branch of the Instrument Co., Ltd. . Qingdao Branch of the Instrument Co., Ltd. (www.qdjk17.com) is in Qingdao, Shandong analysis instruments leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Branch of the Instrument in leadership with the staff warmly welcome all inquiries negotiations to create the Branch of the Instrument better future.