慈溪县朝阳精密计数器厂参考国外实样,研制成功用于机械数字显示式千分尺的计数器—4JSQ—G、4JSQ—y计数器, 并已通过技术鉴定。机械数字显示式千分尺是千分尺的第二代产品,国外已普遍使用,国内正在研制,而机械数字显示式千分尺计数器是该千分尺显示测量读数的关键部件之一。慈溪朝阳精密计数器厂试制成功的计数器与公、英制外径千分尺配装,综合精度达到千分尺使用要 Cixi Chaoyang Precision Counter Factory reference to foreign samples, the successful development of mechanical digital display micrometer counter -4JSQ-G, 4JSQ-y counter, and has passed technical appraisal. Mechanical digital display micrometer is the second generation micrometer micrometer, has been widely used abroad, China is under development, and mechanical digital display micrometer counter is the micrometer to measure the readings of the key components. Cixi Chaoyang Precision Counter Factory trial successful counter and male and female diameter micrometer equipped, the accuracy of micrometer to be used to