Vermont Gage 111137800 Class Zz Plus Plug Gage 0.378 in

Product Description

The VERMONT GAGE 111137800 is a Class ZZ Plus plug gage designed for precise go-inspection work in dimensional quality control applications. Manufactured from tool steel, this gage measures 0.378 inches in diameter with a tolerance of 0.0002 inches and a 10 microfinish surface finish. Overall length is 2.0 inches. Each unit ships with a Certificate of Accuracy traceable to NIST, making it suitable for calibrated inspection programs and shop-floor measurement verification. It is intended for use by quality technicians, machinists, and metrologists who require reliable, repeatable bore and hole-size verification against ASME B89.1 standards.

This plug gage is used to verify whether a bore or hole falls within the accepted go limit during incoming inspection, in-process inspection, or final inspection on the production floor. It is well suited for use alongside set micrometers, verniers, and other precision measuring devices where a known reference standard is needed. Applications span general machining, toolroom work, and quality assurance programs in both job-shop and production environments.

Key Features

• Class ZZ Plus tolerance rating of 0.0002 inches for high-accuracy go-inspection use
• 0.378 inches measurement diameter with 2.0 inches overall length
• 10 microfinish surface finish for consistent, repeatable contact
• Tool steel construction for durability and wear resistance
• Conforms to ASME B89.1 dimensional gage standards
• Includes Certificate of Accuracy with NIST traceability

Compatibility

Designed as an OEM-style go plug gage for use with set micrometers, verniers, and other precision measuring devices requiring a 0.378 inch diameter reference standard per ASME B89.1.

Installation Notes

Plug gages are handled and used by quality technicians and machinists; no power source is required. Clean the gage and the bore being inspected before use to prevent debris from affecting measurement accuracy. Store the gage in its protective case when not in use to avoid surface damage or corrosion. Follow your facility calibration schedule and handle with care to preserve the NIST-traceable accuracy certification.