Vermont Gage 111125400 Class Zz Plus Plug Gage 0.254 in

Product Description

The VERMONT GAGE 111125400 is a Class ZZ Plus plug gage machined from tool steel and used to verify bore and hole dimensions to a tolerance of 0.0002 inches. The working surface carries a 10 microfinish, providing the smooth, consistent contact face required for accurate go inspection. Overall length is 2.0 inches, making it easy to handle in a bench or in-line inspection workflow. Each unit ships with a Certificate of Accuracy traceable to NIST, satisfying documentation requirements for quality management systems. Machinists, toolroom technicians, and quality control inspectors are the primary users of this gage.

This plug gage is suited to production and toolroom environments where hole size must be confirmed before assembly or before a part moves to the next operation. It is used with go inspection procedures to verify that a 0.254-inch diameter bore falls within tolerance. It also serves as a reference standard when setting micrometers, verniers, and other comparative measuring devices. Applications span general machining, precision fabrication, and quality assurance in both job-shop and high-volume manufacturing settings.

Key Features

• Class ZZ Plus tolerance grade for go inspection of 0.254-inch diameter bores
• Tolerance of 0.0002 inches for precise dimensional verification
• 10 microfinish working surface for consistent, repeatable contact
• Tool steel construction for wear resistance and dimensional stability
• Meets ASME B89.1 dimensional gage standards
• Includes Certificate of Accuracy with NIST traceability for QMS documentation

Compatibility

Designed for go inspection of 0.254-inch diameter holes and bores, and for use as a setting reference with micrometers, verniers, and other measuring devices per the application data provided.

Installation Notes

Plug gages are handled and used by quality control technicians and toolroom machinists, not installed in a mechanical system. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the tool steel surface. Do not force the gage into a bore; use light, controlled pressure to avoid measurement error or surface damage. Store in the provided case or a protected location to maintain the calibrated surface finish and dimensional accuracy.