Spi MS160712145 Outside Micrometer 1 in Calibrated

Product Description

The SPI MS160712145 is a mechanical outside micrometer designed for high-precision linear measurement in metrology, machining, and quality control environments. It measures external dimensions across a 1-inch range with a graduation of 0.00005 inches and an accuracy of 0.0001 inches, making it suitable for applications that demand tight tolerances. The measuring faces are constructed from solid carbide for wear resistance and long-term dimensional stability. A rotating spindle allows for consistent seating against the workpiece without applying uneven force. The instrument is factory calibrated and ships with a short-form certificate of calibration traceable to NIST standards. Machinists, quality technicians, and tool-and-die professionals are the primary users.

This outside micrometer is used in machine shops, manufacturing facilities, and inspection departments where external diameter or thickness measurements must meet precise tolerances. The 1-inch range suits a wide variety of small workpieces including shafts, pins, fasteners, and stock material. The included case and calibration certificate make it appropriate for use in documented quality systems and ISO-compliant inspection workflows. Measuring force ranges from 4.0 to 10.0 N, providing a defined contact pressure range for repeatable readings across multiple operators.

Key Features

• 1-inch measurement range with 0.00005-inch graduation for fine resolution
• Accuracy of 0.0001 inches for high-tolerance inspection work
• Solid carbide measuring faces resist wear for extended service life
• Rotating spindle provides consistent, even contact with the workpiece
• Factory calibrated with NIST-traceable short-form certificate of calibration included
• Includes protective carrying case and calibration standards documentation

Compatibility

Designed as a general-purpose mechanical outside micrometer suitable for external measurement tasks in machine shop, manufacturing, and quality inspection environments where a 1-inch range instrument is required.

Installation Notes

This instrument does not require installation but should be handled and stored according to standard metrology practices. Prior to use, verify the zero setting against the calibration standard included with the unit and clean the measuring faces with a lint-free cloth. Store in the provided case when not in use to protect the carbide faces and maintain calibration integrity. Periodic recalibration by a qualified metrology lab is recommended based on usage frequency and applicable quality system requirements.