产品描述：
External Micrometer Sets
With enamelled frame and tungsten carbide tipped anvils and fine adjustment ratchet. High quality fitted metal case.
Contents: 0- 1", 1"- 2"mm, 2"- 3" & 3" - 4" external micrometers, 1", 2" & 3" micrometer setting standards, 2 micrometer setting spanners.