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Measuring Tools电子书

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7人正在读 | 0人评论 9.8

作       者:Unknown

出  版  社:

出版时间:2018-02-27

字       数:7.0万

所属分类: 教育 > 外语 > 实用英语

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  • 读书简介
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While every mechanic makes use of the standards of length every day, and uses tools graduated according to accepted standards when performing even the smallest operation in the shop, there are comparatively few who know the history of the development of the standard measurements of length, or are familiar with the methods employed in transferring the measurements from the reference standard to the working standards. We shall therefore here give a short review of the history and development of standard measurements of length, as abstracted from a paper read by Mr. W. A. Viall before the Providence Association of Mechanical Engineers.
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CHAPTER I

CHAPTER II

CHAPTER III

CHAPTER IV

NOTES

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