两点内测千分尺

1.可进行内径尺寸测量  For inside measurements. 
2.测量面为硬质合金   Carbide measuring faces..
3.50mm规格以下配环规   With set ring for below 50mm items.
4.50mm规格以上可选配环规   Set rings can be applied as per cunstom's request for above 50mm items.

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