Mitutoyo 148-811-10 Micrometer Head 0.5 Inch Spherical Spindle

Product Description

The MITUTOYO 148-811-10 is a mechanical micrometer head designed for precise linear measurement in machining, inspection, and instrumentation applications. It covers a measurement range of 0 to 0.5 inches with an accuracy of plus or minus 0.0001 inches and a graduation of 0.001 inches, making it suitable for high-tolerance work. The head features a rotating spherical spindle with an SKS3 hardened steel measuring face, a plain thimble measuring 0.5118 inches in diameter, and a chrome finish. At 2.64 inches in overall length and weighing approximately 0.2 pounds, it is compact enough for integration into fixtures, stages, and custom measurement setups. Licensed trade professionals and precision machinists use this head as a replacement or upgrade component.

This micrometer head is intended for use in mechanical measurement assemblies, metrology fixtures, and precision positioning stages in both shop floor and laboratory environments. The spherical spindle end accommodates slight angular misalignment during contact, which is useful in setups where the workpiece surface is not perfectly perpendicular to the spindle axis. The stem measures 0.375 inches in diameter and 9.5 millimeters long, allowing standard mounting in compatible fixture bores. The head ships with a paper case for storage and basic protection.

Key Features

• Measurement range of 0 to 0.5 inches with 0.001-inch graduation
• Accuracy of plus or minus 0.0001 inches for high-tolerance applications
• Rotating spherical spindle end for flexible contact geometry
• SKS3 hardened steel measuring face for wear resistance
• Plain thimble, 0.5118 inches in diameter, with chrome finish
• Compact at 2.64 inches overall length and 0.2 pounds

Compatibility

Designed as an OEM-style mechanical micrometer head for use in precision measurement fixtures, positioning stages, and instrumentation assemblies requiring a 0.5-inch range head with a spherical spindle. Part of the MITUTOYO Series 148.

Installation Notes

Installation is typically performed by a precision machinist or metrology technician. The stem should be secured in a compatible bore using a clamp or locking mechanism appropriate to the fixture design; note that a clamp nut is not included with this head. Ensure the mounting bore matches the stem diameter before installation to avoid damage to the spindle or measuring face. Follow applicable shop safety procedures when working with precision instruments and deburr any mounting surfaces before seating the stem.