Vermont Gage 112102920 Class Zz Plus Plug Gage 2.92mm

Product Description

The VERMONT GAGE 112102920 is a Class ZZ Plus plug gage used to verify bore and hole dimensions to tight tolerances in precision metrology and quality-control applications. This pin-style gage measures 2.92 mm in diameter with a tolerance of 0.00508 mm, making it suitable for Go inspection of small-diameter bores where dimensional accuracy is critical. The gage is manufactured from tool steel and features a 10 microfinish surface, which helps ensure repeatable contact and accurate readings. Each unit ships with a Certificate of Accuracy that carries NIST traceability, meeting ASME B89.1 standards. Machinists, quality technicians, and toolroom personnel are the primary users of this gage.

This plug gage is used in manufacturing, toolroom, and inspection environments where small-bore Go verification is required. It is appropriate for use alongside set micrometers, verniers, and other precision measuring devices as part of a calibrated inspection process. The 2.92 mm nominal diameter makes it well suited for tight-tolerance hole inspection on machined components, instrument parts, and similar precision workpieces in both production and inspection lab settings.

Key Features

• Class ZZ Plus tolerance class for Go inspection of small-diameter bores
• 2.92 mm nominal diameter with 0.00508 mm tolerance
• Tool steel construction for durability and wear resistance
• 10 microfinish surface for consistent, repeatable contact
• Includes Certificate of Accuracy with NIST traceability
• Conforms to ASME B89.1 standards

Compatibility

Designed for Go inspection applications and compatible for use with set micrometers, verniers, and other precision measuring devices as stated by the manufacturer.

Installation Notes

Plug gages should be handled and stored by quality technicians or toolroom personnel following standard metrology practices. Clean the gage and the bore being inspected before use to prevent contamination from affecting measurement accuracy. Do not force the gage into an undersized bore, as this can damage the gage surface and compromise calibration. Periodic recalibration against a NIST-traceable standard is recommended to maintain measurement integrity.