Vermont Gage 111149500 Class Zz Plus Plug Gage 0.495 in

Product Description

The VERMONT GAGE 111149500 is a Class ZZ Plus plug gage designed for precise go inspection of machined bores and holes measuring 0.495 inches in diameter. Manufactured from tool steel with a 10 microfinish surface, this gage delivers a diameter tolerance of 0.0002 inches, meeting the requirements of ASME B89.1. It is used to verify that a workpiece hole falls within acceptable dimensional limits during quality control and inspection workflows. Each unit ships with a Certificate of Accuracy traceable to NIST standards, making it suitable for documented inspection processes in manufacturing, machining, and metrology environments.

This plug gage is suited for go inspection applications on production floors, quality labs, and tool rooms where tight bore tolerances must be confirmed. Compatible with standard go inspection procedures, it also serves as a reference standard for setting micrometers, verniers, and other measuring devices. Its compact overall length of 2.0 inches makes it easy to handle during repetitive inspection tasks. Licensed metrologists, quality control technicians, and machining professionals are the primary users of this gage type.

Key Features

• Class ZZ Plus tolerance grade: 0.0002 inches diameter tolerance per ASME B89.1
• 10 microfinish surface for consistent, low-wear contact with workpiece bores
• Tool steel construction provides durability in high-cycle inspection use
• Includes Certificate of Accuracy with NIST traceability for documented QC compliance
• Compact 2.0-inch overall length suits bench and in-process inspection tasks
• Suitable for setting micrometers, verniers, and other calibrated measuring devices

Compatibility

Designed for go inspection of bores and holes with a nominal diameter of 0.495 inches. Also used as a reference standard for setting micrometers, verniers, and other measuring devices in machining and metrology applications.

Installation Notes

Plug gages are handled and used by quality control technicians and metrology professionals — no power source or mechanical installation is required. Keep the gage clean and lightly oiled when not in use to prevent corrosion of the tool steel surface. Never force a plug gage into a bore; if resistance is encountered, the hole is undersize and should be re-inspected with appropriate measuring equipment. Store in a protective case away from temperature extremes to maintain dimensional stability and NIST-traceable accuracy.