There may be disputes about when humans began domesticating horses,
but there is no argument that horses have helped shape human history. We know Chinese equine Veterinary Medicine, including herbal
treatments and acupuncture, dates back thousands of years, but there`s
no agreement on the date, or even century. We do know the year their
health and care became part of the formal curriculum of veterinary
colleges. The year was 1761 and the location was the first veterinary
school in the world, in Lyon, France. Equine anatomy as part of a formal
curriculum has been studied by veterinarians since then, for more than
250 years.
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Common instruments used in mine surveying are:
I. Level: The level is used to measure the height difference between the ground points. Commonly used models are DS 05 , DS 1 , DS 2 , DS 3 , DS 10 , DS 20 and so on.
2. Theodolite: The theodolite is an instrument used to measure the angle between measuring points. Commonly used models are DJ 07 , DJ 1 , DJ 2 , DJ 6 , D 15 and so on.
3. Range finder: The telescope on the theodolite and the level gauge has a line of sight device. With the line of sight wire and the line of sight being late, the line of sight can be measured. Special equipment also has an electromagnetic wave range finder. Electromagnetic wave range finder includes laser, infrared photoelectric distance finder, and microwave range finder with centimeter wave carrier. Commonly used infrared range finder, models are PCH-05, D 14 , D 14L , D 15S , D M503 and so on.
Fourth, in the actual measurement, it is also necessary to equip the tripod, the drawing board, the weight, the accumulator, the tower ruler, the tape measure, the squat mark and other equipment.