Vermont Gage 111151900 Class Zz Plus Plug Gage 0.519 in

Product Description

The VERMONT GAGE 111151900 is a Class ZZ Plus plug gage designed for precise go inspection of bored holes, machined features, and other internal dimensions. Manufactured from tool steel with a 10 microfinish surface, this gage holds a diameter tolerance of 0.0002 inches at a nominal measurement diameter of 0.519 inches. At 2.0 inches overall length, it fits naturally in hand for single-handed inspection passes. Each unit ships with a Certificate of Accuracy backed by NIST traceability, meeting ASME B89.1 standards. Quality control technicians, machinists, and tool-room inspectors rely on this type of gage for high-confidence dimensional verification in production and inspection environments.

This plug gage is suited for go inspection checks on workpieces with a nominal internal diameter of 0.519 inches. Typical applications include calibrating and verifying the readings of set micrometers, verniers, and other measuring devices, as well as direct part inspection on machined components. It is appropriate for both job-shop and production floor use where ASME B89.1 compliance is required. The included NIST-traceable certificate supports ISO and quality-system documentation requirements.

Key Features

• Class ZZ Plus tolerance grade at 0.0002 inches for high-accuracy go inspection
• Tool steel construction provides durability and wear resistance in production use
• 10 microfinish surface for consistent, repeatable contact with the workpiece
• ASME B89.1 compliant for recognized dimensional standards conformance
• Includes Certificate of Accuracy with NIST traceability for quality-system documentation
• Compact 2.0 inch overall length suited for bench and in-process inspection

Compatibility

Designed for go inspection of internal features with a nominal diameter of 0.519 inches. Also used as a reference standard for setting micrometers, verniers, and other precision measuring devices requiring a known diameter reference.

Installation Notes

Plug gages of this type are handled and used by quality technicians and machinists; no permanent installation is required. Store the gage in its protective case and allow it to reach ambient temperature before use to avoid thermal expansion errors. Clean the gage and the part bore with a lint-free cloth before each inspection pass. Do not force the gage through a bore; a go gage should pass under its own weight or with light hand pressure only.