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A Study on Measurement Accuracy of A Theodolite System(V) - A Measurement System Accuracy depending on the distance from theodolite system to target Bars  

Yoon Yong-Sik (한국항공우주연구원 우주시험그룹)
Lee Dong-Ju (충남대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.14, no.4, 2005 , pp. 13-21 More about this Journal
Abstract
The affected factors for an accuracy of theodolite system are not only the measurement environment of temperature, illumination, etc. but also the measurement processes of the distance between two theodolites, the distance from theodolite system to scale bar and the distance from theodolite system to targets. We have known that the best collimation distance between two theodolites and the best distance from theodolite system to scale bar is $3{\sim}4m$. This study was performed for searching the best distance from theodolite system to targets on above measurement configuration. And, we could know that the best distance from theodolite system to targets is $2{\sim}6m$ and the system accuracy could be within ${\pm}0.025mm$.
Keywords
Theodolite; Scale Bar; Target Bar; Collimation; Measurement Accuracy; Measurement Precision; Measurement System Accuracy;
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