• Round base type
• It has a hardened, precision ground and micro-lapped reference face on its base.

This Outside Micrometer comes with Extension Anvil Collars.
It offers you the following benefits:

• The collars have a stable and rugged yet lightweight tube construction, and are ideal for large micrometers.
• The 50mm spindle stroke gives you extended range compared to standard spindle types.
• Anvil collars extend the measuring range even further.
• The setting standards supplied cover the whole measuring range.