Spi Z9305 Micrometer Anvil Disk 1 to 12 Inch

Product Description

The SPI Z9305 is a disk-type micrometer anvil designed as a replacement or spare component for outside micrometers with a measuring range of 1 to 12 inches. The anvil provides the stationary contact surface against which a workpiece is measured, and its precision-ground face is critical to maintaining accurate readings. Weighing 0.15 pounds and measuring 0.5 inches in overall length, this compact accessory is sized for straightforward swap-in service. It is installed by machinists, tool-and-die technicians, and metrology professionals performing micrometer maintenance or reconditioning.

This anvil is suited for machine shops, manufacturing facilities, and metrology labs where outside micrometers in the 1 to 12 inch range are in regular service. Replacing a worn or damaged anvil rather than the full micrometer frame is a common cost-saving maintenance practice in production environments. The disk anvil geometry is standard for general-purpose outside micrometer designs and fits within typical bench-top measurement workflows.

Key Features

• Disk-type anvil geometry for general-purpose outside micrometer applications
• Compatible with micrometers spanning 1 to 12 inch measuring ranges
• Overall length of 0.5 inches for compact, low-profile fitment
• Lightweight at 0.15 pounds for easy handling during micrometer servicing
• Sold individually, allowing single-unit replacement without kit purchase

Compatibility

Designed for use with 1 to 12 inch outside micrometers requiring a disk-type anvil replacement.

Installation Notes

Anvil replacement should be performed by a qualified machinist or metrology technician familiar with micrometer disassembly procedures. Before servicing, ensure the micrometer is removed from active use and any clamping mechanisms are fully released. After installation, verify calibration against a known standard gauge before returning the instrument to service. Follow the micrometer manufacturer's service documentation for thread engagement specifications and seating requirements.