What instrument can measure a garden alone?
The instrument is the main instrument for manual surveying and mapping of large scale topographic maps. Composed of alidades, plate and the support member. In alidades additional electromagnetic wave distance measuring device, can make the operation more convenient and rapid.
Instrument by electronic theodolite, the electromagnetic wave range finder, micro computer, program module, memory and automatic recording device of electronic speed measurement, fast electronic measuring instruments, recording distance and angle calculation, etc.. There are two types of the whole and the combination. The integral electronic speed measuring instrument is a whole assembly of each functional component. It can automatically display the slant distance and angle, automatically calculate and display the distance, elevation difference and coordinate increment, and have higher automation degree. The combined electronic speed measuring instrument, that is, electronic theodolite, electromagnetic wave range finder, computer and drawing equipment, has the advantages of high automation and flexibility. Electronic speed meter is suitable for engineering surveying and large scale topographic survey. It can also provide analytic data for building digital ground model, make ground survey more automatic, and also do tracking measurement of moving target, such as track observation of ship entering and leaving port in harbor engineering.
Electromagnetic range finder uses electromagnetic wave to carry distance measuring signals to measure the distance between two points. A measuring range of 5~20 kilometers is called a range finder, and a geodesic range measuring instrument is within 5 kilometers. Accuracy is generally 5mm+5ppm, with small, portable, high precision characteristics. Since 60s, rangefinder has developed rapidly. In recent years, the production of two-color precision photoelectric rangefinder has reached 0.1mm+0.1ppm accuracy. Electromagnetic range finder has been widely used in the measurement of control, topography and construction lofting, and has improved the efficiency and distance accuracy of the industry.
An instrument for measuring the difference between two points. It consists of telescope, level (or compensator) and pedestal. According to the structure, it can be divided into fixed mirror level, rotating mirror level, micro tilting level instrument and automatic Anping level. Level is widely used in control, topography and construction, lofting and other measurement work. There are a series of standards for China's level: DS05, DS1, DS3, DS10, DS20 and other models ("DS", indicating "geodetic level"), "05, 1, 3",......" They are the average deviation of the difference in the height difference per kilometer measured by the instrument in millimeters. When a special accessory is attached to the level, a laser level can be formed.
