Vermont Gage 111149600 Class Zz Plus Plug Gage 0.496 in

Product Description

The VERMONT GAGE 111149600 is a Class ZZ Plus plug gage designed for precise inside-diameter inspection. It measures 0.496 inches in diameter with a tolerance of 0.0002 inches and features a 10 microfinish surface. Overall length is 2.0 inches. Machined from tool steel, it delivers the hardness and dimensional stability required for repeated use in production and quality-control environments. Each unit ships with a Certificate of Accuracy traceable to NIST, confirming it meets ASME B89.1 standards. Licensed metrologists, quality inspectors, and machining technicians typically use this gage to verify bore and hole dimensions on finished or in-process workpieces.

This plug gage is suited for go inspection applications where a part feature must be confirmed as within its lower tolerance limit. It is also used to calibrate and verify the accuracy of set micrometers, vernier calipers, and other inside-measuring instruments. Typical deployment is in machine shops, tool rooms, and quality labs handling precision-machined components. The 0.496-inch diameter makes it appropriate for checking holes and bores in that specific size range across a wide variety of part types and materials.

Key Features

• Class ZZ Plus tolerance grade with 0.0002 inches tolerance for high-accuracy go inspection
• 10 microfinish surface for consistent, low-friction gage contact
• Tool steel construction provides hardness and long service life under repeated use
• Conforms to ASME B89.1 dimensional standards
• Includes Certificate of Accuracy with NIST traceability for documentation and audit purposes
• Compact 2.0-inch overall length for easy handling in confined inspection setups

Compatibility

Designed for go inspection use with set micrometers, verniers, and other inside measuring devices requiring a reference standard at 0.496 inches diameter. Suitable as an OEM-style replacement or supplemental gage wherever a Class ZZ Plus plug gage at this diameter is specified.

Installation Notes

Plug gages are handled and used by quality inspectors and machining technicians rather than installed in a fixed assembly. Clean the gage and the workpiece bore before each use to prevent debris from affecting the measurement reading. Store the gage in its protective case when not in use to prevent nicks or corrosion that would compromise its tolerance class. Avoid dropping or forcing the gage through an undersized bore, as impact or side-loading can alter the calibrated diameter.