Vermont Gage 911100800 Class Zz Plus Plug Gage 0.008 in

Product Description

The VERMONT GAGE 911100800 is a Class ZZ Plus plug gage designed for precision dimensional inspection of small-diameter bores and holes. This go-inspection gage measures 0.008 inches in diameter with a tolerance of 0.0002 inches, making it suitable for tight-tolerance machined components where consistent pass/fail verification is required. Constructed from tool steel with a black oxide finish, the 911100800 resists corrosion and wear under regular shop use. Each unit ships with a Certificate of Accuracy traceable to NIST, supporting documented quality-control processes in manufacturing and metrology environments. Overall length is 2.0 inches. Licensed machinists, quality technicians, and precision instrument calibrators are the primary users.

This plug gage is used in precision measurement and inspection applications where bore diameter verification is critical. It is suited for setting micrometers, verniers, and other measuring devices, as well as for go-inspection routines on small-diameter features in production machining, tooling, and quality assurance workflows. The 0.008-inch diameter range addresses some of the smallest bore sizes encountered in instrument-grade and high-tolerance manufacturing. It is appropriate for both shop-floor inspection and metrology lab use wherever ASME B89.1 compliance is required.

Key Features

• Class ZZ Plus tolerance rating at 0.0002 inches for precise go/no-go inspection
• 0.008-inch measurement diameter for small-bore and fine-tolerance applications
• Tool steel construction with black oxide finish for corrosion and wear resistance
• Includes Certificate of Accuracy with NIST traceability for documented quality control
• Conforms to ASME B89.1 dimensional standards
• Compact 2.0-inch overall length for easy handling in tight inspection setups

Compatibility

Designed for use as a go-inspection plug gage compatible with micrometers, verniers, and other precision measuring devices requiring a 0.008-inch diameter reference standard per ASME B89.1.

Installation Notes

Plug gages of this type are handled and used by quality technicians and precision machinists — no power tools or utilities need to be shut down before use. Keep the gage clean and lightly oiled when not in use to preserve the tool steel surface and black oxide finish. Do not force the gage into a bore; improper insertion can damage the gage or the workpiece. Store in a protective case away from abrasive materials and temperature extremes to maintain calibration integrity.