Starrett 51929 Micrometer Calibration Standard Set 11 Piece

Product Description

The STARRETT 51929 is an 11-piece micrometer calibration standard set designed for verifying and calibrating outside micrometers across a range of 1 to 11 inches. Each standard in the set represents a discrete reference length, allowing technicians and metrologists to confirm measurement accuracy at multiple points across a micrometer's travel. The set is factory calibrated, providing traceable reference standards for use in quality control environments, tool rooms, and metrology labs. At 2.6 pounds total, the set is compact enough for bench use while covering a broad measurement range essential for maintaining instrument accuracy.

This set is intended for use with outside micrometers in tool room, manufacturing, and inspection applications. It is suited for industrial facilities, machine shops, and calibration labs where maintaining micrometer accuracy to specification is a routine requirement. Technicians use reference standards like these during periodic calibration checks, after instrument repairs, or when validating a micrometer before critical measurement work. The 11-piece configuration covers 1-inch increments from 1 inch through 11 inches, making it practical for shops working with a wide range of outside micrometer sizes.

Key Features

• Factory calibrated standards for traceable outside micrometer verification
• 11 individual standards covering 1 inch through 11 inches in 1-inch increments
• Minimum reference length of 1.0000 inches for precise lower-range calibration
• Compact set weight of 2.6 pounds for easy bench handling and storage
• Does not include heat insulating handles — standards are handled directly

Compatibility

Designed for use with outside micrometers requiring reference standards across a 1 to 11 inch measurement range. Suitable for any outside micrometer that accepts conventional calibration standards in this size range.

Installation Notes

Calibration standards should be handled with care to avoid surface damage that could affect measurement accuracy. Clean contact surfaces before use using appropriate metrology-grade cleaning materials. Store standards in their case when not in use to prevent corrosion, nicks, or dimensional changes. Calibration work should be performed by a qualified technician familiar with micrometer verification procedures and applicable quality standards such as ISO 9001 or ANSI/NCSL Z540.