Total Station, a distance measuring maximum distance Prism 600m (good weather) figures show that the largest single prism 5.0km: 99999999.999 Minimum 1mm precision prism 2 + 2 ppm Prism 3 + 2 ppm measurement time precision measuring 0.8 seconds, 0.5 seconds average track number of measurements can be selected from 2 to 5 times the average of the input parameters of meteorological correction automatic correction refraction and earth curvature correction Manual input, Auto correction Prism constant correction automatically correct the input parameters Angle measurement mode absolute encoder 79mm diameter encoder Minimum reading 1 " / 5 "optional Precision 2" level of detection methods offer: the vertical disc diameter: the diameter Telescope As imaging Tube Length 154mm Effective aperture telephoto lens: 45mm, distance: 50mm 30 × magnification FOV 1 ° 30 'minimum focusing distance of 1m Resolution 3 "automatic vertical compensation system biaxial liquid Optical electronic compensator working range ± 3' Accuracy 1" Vial vial 30 "/ 2mm circular level 8 '/ 2mm Optical Plummet Image Erect Magnification 3 × Focusing range 0.5m ~ ∞ 5 ° field of view display section type double, the numeric keys + letter key-board battery Power rechargeable Ni - MH battery Voltage DC 6V 8 hours continuous working time Optional function Prism laser point under SD card stores the size and weight Dimensions 200mm × 170mm × 350mm Weight 5.5㎏ use geological compass position magnetic north and south poles because of the south and north poles and geographically incomplete match that the magnetic meridian and geographical meridian not coincide, the earth at any point to true north and magnetic north at this point is inconsistent, the angle between the two directions is called magnetic declination. East of the northern tip of the needle at a point on the earth somewhat north direction is called the East side, west side, said the West are somewhat biased. East bias is (+) Western bias is (-). Declination around the planet known magnetic declination is calculated periodically if certain point, the relationship is a test line of magnetic azimuth A magnetic and true north azimuth A is A equals A magnetic declination subtraction. Application of this principle can be perpendicular magnetic declination correction laser instrument, correction can screw rotating compass scale, the horizontal dial left or turn right (east side of the magnetic declination is right, then the partial West left) laser vertical meter, so the chassis between the compass north-south line and the horizontal scale dial connection 0--180 degree angle equal to the declination. After reading measurement correction would be true azimuth. Measurement is the determination of the desired product orientation relative position of the desired product with high-precision laser vertical instrument measuring person between the desired product is measured azimuth (azimuth angle refers to the angle clockwise from the meridian of the survey line). Laser plumb instrument is the use of optical collimation principle, the collimation axis coincides with the visible laser produced a plumb line to align the reference point to determine location of equipment Qingdao laser vertical instrument, often used as a control tool axis Upward measured. In the construction and installation of high-rise buildings, towers, chimneys, elevator, large institutional equipment and other occasions has been widely applied. In my past experience in the construction it is, but if circled big to die, you'd better take the machine over time professionals correcting it. (Preferably adjusted to not circle or circled minimum) when there is a vertical line can not put a layer of a laser vertical instrument manufacturers printed ... | Jinke Instruments (Online) | laser vertical instrument from Qingdao Branch Instruments Limited. 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.