What are the measuring instruments and what are the knowledge of measuring instruments?
Electronic speed meter. The utility model is composed of an electronic theodolite, an electromagnetic range finder, a microcomputer, a program module, a memory and an automatic recording device, and has the advantages of rapid ranging, angle measurement, calculation and recording, and other electronic measuring instruments.
Electromagnetic range finder. It is an instrument for measuring the distance between two points by means of electromagnetic wave carrying distance signals. The range of 5 20km is called medium range rangefinder, and the range of measurement is within the range of 5km. It is a short range ranger.
Gyro theodolite. A combination of gyroscopes and theodolites for measuring the true azimuth of a water supply in a high-rise building. It can be used in the latitude of 75 degrees north and south of the earth.
