Measuring force is an important technical indicator of measuring instruments. The measurement force of the measuring instrument will bring a large error to the measurement accuracy. The simple dynamometer modified with the waste micrometer is mainly used for the verification of the measuring force such as the optical instrument and the thousand comparator and the influence of the radial gap of the measuring rod on the indication value. After many years of practical application, the dynamometer has the characteristics of easy manufacture, convenient carrying, reliable use and versatility.
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