Detection laser rangefinder principle, Hammer should always perpendicular to the axis of the structure or concrete surface element detection, slow pressure readings accurate rangefinder, quick reset. Presumption of concrete strength: 1, from 16 rebound values ??measured in the 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 ultrasonic range finder, 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 detection member survey area, they should all by a single component detection: ① concrete compressive strength less than the average of 25.0MPa, S> 4.50Mpa; ② concrete compressive strength Stationing three-dimensional freedom wherever you need it most total station placement, use the program to calculate the measurement site: 25.0MPa average of not less than the price of not more than 60MPa rangefinder, S> 5.50Mpa Total Station Features coordinate and set the azimuth orientation. Can use up to five known backsight points as involved in the calculation, the observations can be single or double-sided angle and distance values ??observed. Stake out the data points can be entered by the site, you can also call the total station data memory. Memory data can be uploaded and stored in a computer in the total station. At the same time you can see the polar coordinates, orthogonal and coordinate difference staked deviation. MLM The program can be calculated in real time ramp between two target distance, horizontal distance, elevation and azimuth. Involved in the calculation of real-time point measured or select from memory, you can also manually input from the keyboard. Users can have a line on the opposite side edges and Ray are two options. During the measurement, the last two can be checked immediately on the sides. Reference Line / Arc applied this procedure to the various lines of buildings, lofts and vetting straight part of the road, as well as guiding the linear excavation work has brought great convenience. Guides can also be based on need translation, rotation adjustments. Building construction stakeout axis axis is based on the layout of the building site, all points are staking out according to their relative position to the axis. Lofting process, instrument, prisms, stakeout points, and relative position of the axis has a graphical display. REM measured point can not reach some of the prism, can be aimed directly at the prism directly below the reference point, measuring the horizontal distance, then aim the remote point, measure the height of the measured point. Headroom can be used to measure the power lines, bridges and other tall structures. Area measurement Area measurement program can calculate in real-time connection between the target point surrounded the area and perimeter. Target points without limitation, involved in the calculation of real-time point measured, selected from memory, but also live input from the keyboard. Brand rangefinder, Jinke instrumentation (certified), rangefinder provided by Qingdao Branch of the Instrument Co., Ltd. Qingdao Branch of the Instrument Co., Ltd. (www.qdjk17.com) is Qingdao, a leader in analytical instruments, 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 Branch instrumentation a better future.