Starrett 65052 Mechanical Micrometer Head 0.5 Inch Range

Product Description

The STARRETT 65052 is a mechanical micrometer head designed for precision linear measurement in tooling, machining, and metrology applications. It delivers an accuracy of 0.000050 inches over a maximum measurement range of 0.5 inches, making it suitable for close-tolerance work where repeatable readings are critical. The satin chrome finish resists glare and corrosion in shop environments. The advanced sleeve features staggered graduation lines and distinct figures that reduce reading errors during use. Licensed machinists, toolmakers, and metrologists typically integrate this head into custom fixtures, stages, and precision positioning assemblies.

The 65052 is used in machine shop and metrology settings where a standalone micrometer head must be mounted into a custom or OEM fixture. With a flat spindle tip and a stem diameter of 9.53 millimeters (0.375 inches), it fits standard micrometer head bores in positioning stages, depth stops, and measuring fixtures. The compact thimble diameter of 13.49 millimeters (0.531 inches) keeps the overall envelope tight for confined mounting situations. This head is sold as a single unit and is intended for replacement or new-build precision instrument assemblies.

Key Features

• Accuracy of 0.000050 inches for close-tolerance measurement applications
• Advanced sleeve design with staggered lines and distinct figures for fast, low-error readability
• Flat spindle tip for consistent contact on flat workpiece surfaces
• Satin chrome finish reduces glare and provides corrosion resistance in shop environments
• Compact thimble diameter of 13.49 millimeters (0.531 inches) suits tight fixture envelopes
• Quick-adjust mechanism for efficient zero-setting and range changes

Compatibility

Designed as a replacement or new-build micrometer head for precision positioning fixtures, measuring stages, and custom tooling assemblies that accept a standard 9.53-millimeter stem diameter micrometer head with a 0.5-inch measurement range.

Installation Notes

Installation is typically performed by a toolmaker or metrologist using standard clamping or locking-nut fixtures that secure the stem. Ensure the mounting bore is clean and free of chips before seating the stem to avoid introducing runout or misalignment. Do not overtighten clamping hardware against the stem, as this can distort the barrel and affect accuracy. Verify zero calibration after mounting before taking measurements.