Vermont Gage 112102980 Class Zz Plus Plug Gage 2.98mm

Product Description

The VERMONT GAGE 112102980 is a Class ZZ Plus plug gage designed for precision dimensional inspection of bores, holes, and internal features. Manufactured from tool steel with a 10 microfinish surface coating, this gage checks whether a feature meets its specified tolerance using a go inspection method. The nominal diameter is 2.98 mm with a tolerance of 0.005 mm, making it suitable for tight-tolerance quality control work. Each unit ships with a Certificate of Accuracy traceable to NIST, supporting documentation requirements in calibrated inspection environments. Metrology technicians, quality control inspectors, and precision machining professionals are the primary users of this gage.

This plug gage is used in production inspection, incoming inspection, and calibration lab settings where small-diameter bore verification is required. It is well suited for verifying hole sizes on precision machined components, setting micrometers, verniers, and other measuring devices to a known reference diameter. The 2.98 mm size covers small-bore applications common in medical device manufacturing, electronics, and general precision machining. Its compact overall length of 2.0 inches makes it easy to handle and store in a gage block or pin gage set tray.

Key Features

• Class ZZ Plus tolerance class with 0.005 mm tolerance for reliable go inspection
• 10 microfinish surface coating for low wear and consistent contact with the measured feature
• Tool steel construction for durability in production and lab environments
• Includes Certificate of Accuracy with NIST traceability for calibration documentation
• Conforms to ASME B89.1 dimensional gage standards
• Compact 2.0 inch overall length for easy handling and storage

Compatibility

Designed for use as a go plug gage in standard pin gage handle systems and compatible with micrometers, verniers, and other measuring devices requiring a 2.98 mm reference standard.

Installation Notes

Plug gages of this type are handled and used by trained metrology technicians or quality control personnel, not installed in a mechanical system. Store the gage in a clean, dry environment and handle it with clean cotton gloves or lint-free cloth to prevent surface contamination and corrosion. Do not force the gage into a feature; if resistance is felt beyond normal slip fit, stop and inspect both the gage and the workpiece. Calibrate and verify gage condition on a scheduled interval per your quality management system requirements.