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本文介绍一种用卧轴多齿分度台——Ｗ－Ｚ转换器直接检定经纬仪竖直度盘的方法。该方案结构简单，所用元件少，溯源链短，因而大大提高了检定不确定度和检定装置的可靠性。装调之后可在长时间内保持原有技术指标，而且可以进行必要的自检，是目前较为理想的经纬仪检定装置。
This paper presents a method for direct verification of the theodolite vertical disc using a horizontal axis multi-tooth indexing table - W-Z converter. The scheme has the advantages of simple structure, fewer components and traceability chains, thereby greatly improving the verification uncertainty and the reliability of the verification device. After the installation can be maintained in a long time the original technical indicators, but also the necessary self-test, is currently the ideal theodolite test device.