尖頭外徑千分尺編號(hào)規(guī)格112-1530-25mm分度值0.01mm測(cè)砧15 112-15425-50mm112-1650-25mm112-16625-50mm112-2010-25mm測(cè)砧30 112-20225-50mm112-2130-25mm112-21425-50mm數(shù)顯尖頭外徑千分尺編號(hào)規(guī)格342-2510-25mm分辨率0.001mm測(cè)砧15 342-25225-50mm342-2610-25mm測(cè)砧30 342-26225-50mm