三爪内径千分尺
Internal micrometer with three-point contact

2018-05-14

两点内径千分尺
Internal micrometers with two-point contact

2024-04-25

Inspection of measuring and test equipment - Test instruction for internal micrometers with 2-point contact
测量和试验设备的检验.带两点接触的内径千分尺的试验说明

2010-08-01

Inspection of measuring and test equipment - Test instruction for internal micro meters with three-point-contact
测量和试验设备的检验.带三点接触的内部微型仪表的试验说明

2002-08-01