Starrett 64146 Micrometer Calibration Standard Set

Product Description

The STARRETT 64146 is a 12-piece micrometer calibration standard set covering a measurement range of 12 to 23 inches. Each piece in the set serves as a precision reference standard for verifying and calibrating outside micrometers. The set is factory calibrated, giving technicians and tool-room professionals a traceable baseline for confirming instrument accuracy. At 13 pounds total, the set is substantial and intended for bench use in tool rooms, metrology labs, and quality control environments where measurement integrity is critical.

This calibration standard set is designed for use with outside micrometers in industrial, manufacturing, and precision machining environments. It covers the 12-inch to 23-inch range in individual increments, making it suitable for shops that regularly work with large-bore or large-diameter components and need reliable go/no-go reference points for their measurement tools. Calibration standard sets like this one are typically used by tool room technicians, quality engineers, and metrology personnel performing routine instrument checks or pre-job verification.

Key Features

• 12-piece set covering 12 to 23 inches in individual length increments
• Factory calibrated for traceable measurement accuracy
• Designed specifically for use with outside micrometers
• Minimum length of 12 inches suits large-scale precision measurement applications
• Set weight of 13 pounds reflects solid, full-length construction suitable for bench use

Compatibility

Designed for use with outside micrometers requiring calibration standards in the 12 to 23 inch measurement range.

Installation Notes

Calibration standards should be handled with care to avoid surface damage that could affect reference accuracy. Use a clean, stable work surface when performing micrometer verification. Store standards in their protective case when not in use to prevent corrosion or contact damage. Calibration procedures should follow the instrument manufacturer guidelines and applicable metrology standards for your facility.