分度头 meaning in English

dividing head; index head; indexing head; spiral head

Verification regulation of optical digital dividing head
光学数显分度头检定规程
Rule for inspection of mechanical dividingheads for export
出口机械分度头检验规程
Universal dividing head - testing of accuracy
万能分度头.精度测试
Mechanical dividing heads classifations and technical specifcations
机械分度头分类和技术条件
Specification for the accuracy of machine tools and methods of test - dividing heads
机床精度及试验方法.第12部分:分度头

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