Vermont Gage 112308870 Class Zz Plus Plug Gage 8.87mm

Product Description

The VERMONT GAGE 112308870 is a Class ZZ Plus plug gage designed for precise go-inspection of bored, drilled, and reamed holes at an 8.87 mm nominal diameter. Manufactured from tool steel with a 10 microfinish surface coating, it holds a tolerance of 0.00508 mm, making it suitable for dimensional verification in production and quality-control environments. Each unit ships with a Certificate of Accuracy traceable to NIST, confirming the gage meets the dimensional requirements of ASME B89.1. Machinists, quality technicians, and metrology lab personnel use plug gages of this class to verify hole size before assembly or final inspection.

This plug gage is appropriate for use with go inspection routines in manufacturing and machining shops, tool rooms, and inspection departments. It is also suited for setting and verifying micrometers, verniers, and other measuring devices where a known reference diameter is required. The 8.87 mm size addresses metric hole specifications common in precision component manufacturing, mold and die work, and close-tolerance machining applications.

Key Features

• Class ZZ Plus accuracy with 0.00508 mm tolerance for reliable go-inspection
• Tool steel construction for durability and dimensional stability
• 10 microfinish surface coating minimizes wear and ensures consistent contact
• NIST-traceable Certificate of Accuracy included with each gage
• Meets ASME B89.1 dimensional standards
• 2.0000 inch overall length for convenient hand-held use

Compatibility

Designed as an OEM-style go-inspection plug gage for use with standard plug gage handles and holders sized for the 8.87 mm diameter range; also suitable for setting micrometers, verniers, and other measuring instruments requiring a traceable reference diameter.

Installation Notes

Plug gages are handled and used by qualified machinists or quality-control technicians following metrology best practices. Store the gage in its protective case when not in use to prevent surface damage and corrosion. Do not force the gage into an undersize hole; apply only light, consistent hand pressure to avoid wear on the gage and workpiece. Clean contact surfaces before each use to ensure accurate measurement readings.