Spi CMS160725066 Ball Anvil Micrometer 0 to 1 Inches

Product Description

The SPI CMS160725066 is a mechanical outside micrometer fitted with a carbide-faced ball anvil and a spherical spindle, designed for measuring concave, curved, or irregular workpiece surfaces where a standard flat anvil cannot seat properly. The ratchet stop thimble delivers consistent measuring pressure across repeated readings, reducing operator-to-operator variation. Graduation is 0.0001 inches, and the instrument ships calibrated with a Short Form Certificate of Calibration included. It arrives in a protective case ready for immediate use on the shop floor or in a precision measurement environment.

This micrometer is suited for machining, tooling, and metrology applications where ball or spherical contact points are required to measure grooves, curved surfaces, or radii. The 0 to 1 inch measurement range covers a wide variety of small-diameter and contoured workpieces. The painted finish housing provides durable everyday handling. Machinists, tool-and-die makers, and quality control technicians are the primary users. It is appropriate for both production floor spot-checking and calibration lab use when paired with its included calibration certificate.

Key Features

• Ball anvil and spherical spindle for accurate contact on curved and concave surfaces
• Carbide-faced anvil and spindle for extended wear resistance
• 0.0001 inch graduation for high-precision measurement
• Ratchet stop thimble for consistent, repeatable measuring pressure
• Ships calibrated with a Short Form Certificate of Calibration
• Includes protective storage case

Compatibility

Designed as a general-purpose mechanical ball anvil micrometer for use across standard 0 to 1 inch range measuring applications requiring curved or spherical contact geometry.

Installation Notes

This instrument requires no installation in the traditional sense but should be handled and stored by qualified metrology or machining personnel. Before use, verify the zero setting against the included calibration certificate and clean both the anvil and spindle contact faces with a lint-free cloth. Do not over-tighten the thimble past the ratchet stop, as this can introduce measurement error or damage the contact faces. Store in the provided case when not in use to protect the carbide faces and maintain calibration integrity.