Fundamentals of Dimensional Metrology, Part 1 |
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accuracy actual adjustment amount amplification angle apply bands base basic calibration caliper cause chapter close combination comparator comparison considered dial indicator difference direct discrimination discussed distance divided division edge electronic element error example Figure flat force fringe function gage blocks graduations greater hand head height hole important inch increase inspection instrument known length light limit machine means meas measurement mechanical ment method metrology micrometer mike move movement nearly Note observer optical parallel plane plate pneumatic position possible practical precision problem production range reading reason reference reference surface reliability repeated rule scale selection sensitivity separate shown in Fig shows side simply sine spindle square stand standard steps surface surface plate tion tolerance turned usually variables vernier wave wear zero