三爪內(nèi)徑千分尺

1.適用于通孔精密測(cè)量   For through hole measuring.
2.配有接長(zhǎng)桿適用于深孔測(cè)量   With extension rod for deep hole measuring.
3.配校對(duì)環(huán)規(guī)   With set ring.
4.測(cè)量面為合金鋼   Hardened steel contact points.

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