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A classification where hardware tools have to say is the measurement tool, because there is no rule without Cheng Fangyuan, is a tool for measuring the life of a lot of things that have the same shape and shape our life without a content is not according to the measurement tool size measurement is completed, so the this is not the form of things, become a rule, the morphology of the concept.
The concept of measurement is really good, because a lot of the length size, roundness, cylindricity, thickness measurement, communication, angle measurement are need the help of some tools, have a certain size, then according to the known data corresponding to a process of unknown data, hardware measurement tools such as the tool is what we say, the common measurement tool can say is the tape, calipers, gauges, measuring instrument, measuring tools and using different forms.
But the use of measurement tools are not the same, because there are a lot of time measuring tool is universal, is the general measuring tools, special occasions is the use of some special tools, this tool is developed for particular situations, there is a kind of work measurement tools, targeted however, different measurement tools operating mode is not the same, it is the specific working principle is different, is used in mechanical, electric, optoelectronics and other different forms driven tools, measuring to the needs of the data.
But in the process of measurement in general and the increasingly high demand for accuracy, and now requires scientific error is very strict, so the future development is able to measure the various tools produced by the principle of a relatively high skill and is connected with a computer, the current technology in the unceasing progress, the ideal tool like this the near future will be realized.
The structure and construction of different measuring tools are not the same, but at this time it should be noted that the different components of the measurement tools are not the same role