Vermont Gage 112102520 Class Zz Plus Plug Gage 2.52mm

Product Description

The VERMONT GAGE 112102520 is a Class ZZ Plus plug gage designed for precise go inspection of small-diameter bores and holes. Machined from tool steel and finished to a 10 microfinish surface, this gage measures a nominal diameter of 2.52 mm with a tolerance of 0.005 mm (0.00508 mm). It is used to verify that a machined feature meets its minimum acceptable size. Each unit ships with a Certificate of Accuracy traceable to NIST, making it suitable for use in calibrated tool rooms, quality control labs, and production inspection environments. Machinists, quality technicians, and metrology professionals are the primary users.

This plug gage is used wherever precise small-bore go inspection is required. Typical applications include verifying bored, drilled, or reamed holes in machined components across light manufacturing, aerospace, and automotive part production. It is also used to set and verify micrometers, verniers, and other measuring devices requiring a known reference diameter. The 2.52 mm size covers applications where metric small-diameter tolerancing is critical and where gauge-block or optical methods are impractical at the point of inspection.

Key Features

• Class ZZ Plus tolerance grade for go inspection of small-diameter features
• 2.52 mm nominal diameter with 0.005 mm tolerance
• 10 microfinish surface for consistent, repeatable contact
• Tool steel construction for wear resistance and dimensional stability
• Includes Certificate of Accuracy with NIST traceability
• Conforms to ASME B89.1 standards

Compatibility

Designed as a go inspection reference for bores and holes with a nominal diameter of 2.52 mm. Also suited for setting and verifying micrometers, verniers, and other dimensional measuring devices requiring a calibrated metric reference.

Installation Notes

Plug gages are handled and used by quality technicians and machinists; no permanent installation is required. Store the gage in its protective case when not in use to prevent surface damage and contamination. Clean the gage and the feature being inspected before use to ensure accurate results. Handle with clean, dry hands or cotton gloves to prevent corrosion from skin contact.