Laser vertical collimator is the use of a semiconductor laser to produce a telescope collimation axis coincides with the visible laser beam can be directly observed by the human eye. The instrument uses integrated body, stable and reliable performance. The instrument uses a semiconductor laser, a small size, light weight, shock-resistant, long life and other advantages. Laser with high brightness, good color and other characteristics. Laser optical axis of the laser system and the telescope instrument boresight strictly concentric with coke, coaxial, and therefore, when the telescope objective, at the destination can produce a visible red spot. The instrument to the point with automatic delay off feature will help to extend the life of the laser tube, to save battery. By focusing on the point of the laser spot is no need to improve the measurement accuracy. Instrument equipped with a square-shaped laser target users more convenient operation. According to the user's needs can be equipped with a zone plate, installed after the zone plate, at the destination can produce a red crosshair, when measurement is more accurate and convenient. Instrument equipped with a removable filter, remove or install the removable filter, brightness telescope field of view is not affected, mounted on removable filter, when you turn the laser eye through a telescope . The instrument has dial rangefinder, the measurement and calibration more accurate. Instrument uses two AA alkaline batteries, two new AA-size alkaline batteries can be used continuously for 2 to 3 hours. Nanfu alkaline batteries are recommended. Laser rangefinder Leica DISTO D2 take the grip ergonomic design and compact, you can safely hold any pocket or put it in the hands. The results show clearly displayed on three lines of the display. Instant in the dark, illuminated display can still easily use to read the results. Simple clever Minimum / maximum measurements, tracking and storage of results make your work easier to measure from edges or corners of the use of flip-style base, you can work in any measurement environment. Quick and easy touch of a button, you can measure distances and calculate the area or volume. Because the use of geological compass magnetic north and south poles position south, north and geographic poles are not entirely consistent, ie the magnetic meridian is not coincide with the geographical meridian, any point on the Earth's magnetic north to true north direction is inconsistent with that point, the two the angle between the direction 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 of (-). Declination everywhere on Earth are calculated periodically if known declination of a point, the relationship is a test line of magnetic azimuth A magnetic and true north azimuth A is A equals A subtraction magnetic declination. This principle can be applied magnetic declination correction scale can spiral rotating compass when corrected, so that the level or turn the dial to the left to the right (east declination is biased to the right, then left the West migraine) Qingdao price range finder, compass chassis between the north-south line and the horizontal scale dial connection 0--180 degree angle equal magnetic declination. After reading the measurement correction on the true azimuth. Azimuth measurement target compound is the desired product and the determination of the relative positional relationship between the measuring person, that is, the desired product was measured azimuth (azimuth angle refers to an angle clockwise from the meridian line of the survey). Measured relaxation brake screws, so the objective target plate measurement point on, if the compass toward the northern end of the desired product laser rangefinder, the southern tip of relying on their own, to aim to make the desired product, the objective target plate holes, cover glass filaments, for purposes such as target plate holes even in a straight line, while the chassis is centered bubble vial, to be referred to the degree of the compass needle still is the measurement of the azimuth of the target product. (If the pointer is still not the moment when the needle swings readable half the minimum degree at the same time also measure other elements of reading). Domestic rangefinder, rangefinder, Jinke instrumentation provided by Qingdao Branch of the Instrument Co., Ltd. Qingdao Branch of the Instrument Co., Ltd. (www.qdjk17.com) strong, credible, in Qingdao, Shandong analytical instruments industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the Branch of the Instrument and you hand in hand into the brilliant, for a better future!