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A Study on Measurement System Accuracy of Theodolite System(IV) - A Measurement System Accuracy depending on a Distance of Scale Bar on the Distance 4m between two Theodolites  

Yoon Yong-Sik (한국항공우주연구원 우주시험그룹)
Lee Dong-Ju (충남대학교 기계공학과)
Park Yo-Chang (특허청 기계금속심사국 일반기계과)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.14, no.3, 2005 , pp. 67-73 More about this Journal
Abstract
An accuracy of theodolite system may be affected by a measurement environment and a measurement distance change from theodolite to scale bar and/or targets. This study was performed for measuring an accuracy when the distance from thodolite system to scale bar was changed $2\~6m$ on the distance 4m between two theodolites. The results showed that an accuracy was ${\pm}0.025mm$ or better when the distance from theodolite system to targets was 3, 4 and 5m. According to the results, it was found that the best distance from theodolite system to scale bar was $3\~4m$ when the collimation distance was $3\~4m$.
Keywords
Theodolite; Scale Bar; Target Bar; Collimation; Measurement Accuracy; Measurement Precision; Measurement System Accuracy;
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