Vertical laser instrument is to add two semiconductor lasers based on optical alignment system hanging on by one of the vertical quasi telescope laser beam is emitted. The structure of the instrument to ensure that the optical axis of the laser beam collimation telescope concentric, coaxial, with coke, when the telescope target, the target will appear at a small bright spot of red in the eyepiece on the exterior of the instrument with filters ultrasonic range finder, available direct observation of the human eye. Instruments also has a grid laser target finder, makes the measurement more convenient. Another laser to point the laser beam emitted by the system under it, using a laser beam at a reference point, with fast and intuitive instrument dial on the diameter measurement is more accurate and convenient. Detection, Hammer should always be perpendicular to the axis of the detection surface of concrete structures or components, slow pressure, accurate readings quickly reset. Presumption of concrete strength: 1, from 16 rebound values ??measured in the infrared range finder area, excluding the three maximum and three minimum, then the remaining 10 rebound values ??averaged. 2, as the rebound and non-member non-horizontal test surface, the angle should be more positive, more positive rebound value again after pouring more positive side. 3. The value of the survey area carbonation depth and resilience values ??more positive after the isolated strength concrete conversion value of the measuring area. 4, when the measured intensity values ??of structure or component area appeared less than 10.0MPa, take fcu, e <10.0MPa. fcu, min 5, when the number of the surveyed area structure or component is less than 10, fcu, e = 6, when the number of structures or components of the survey area is not less than 10 or by batch detection fcu, e = fcu, m-1.645 * s 7, when one of the following occurs according to the strength of concrete batch standard deviation member survey area detection handheld laser rangefinder, all by a single member should detect: ① concrete compressive strength less than the average of 25.0MPa, S> 4.50Mpa; ② 25.0MPa concrete compressive strength of not less than the average of not more than 60MPa, S> 5.50Mpa laser rangefinder Leica DISTO D2 take the grip ergonomic design is compact, can be safely held in the hand or placed inside any pocket . 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. Handheld laser range finder, 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!