Vermont Gage 111138500 Class Zz Plus Plug Gage 0.385 in

Product Description

The VERMONT GAGE 111138500 is a Class ZZ Plus plug gage used to verify bore and hole dimensions to a high degree of accuracy. Measuring 0.385 inches in diameter with a tolerance of 0.0002 inches, this gage is machined from tool steel and finished to a 10 microfinish surface. The overall length is 2.0 inches. Every unit ships with a Certificate of Accuracy traceable to NIST, confirming compliance with ASME B89.1 dimensional standards. Machinists, quality technicians, and tool room personnel rely on plug gages like this one to confirm Go inspection criteria before parts advance in a production or inspection workflow.

This plug gage is suited for Go inspection use in machine shops, tool rooms, and quality control environments. It is also appropriate as a reference standard for setting micrometers, verniers, bore gages, and other measuring devices that require a known physical reference. The 0.385-inch diameter makes it useful for checking holes drilled, reamed, or bored to that nominal size in both production and job-shop settings. Residential and commercial manufacturing environments both rely on Class ZZ Plus gages where moderate tolerance verification is required.

Key Features

• Class ZZ Plus tolerance of 0.0002 inches for reliable Go inspection
• Tool steel construction for wear resistance and dimensional stability
• 10 microfinish surface for consistent, low-friction contact with bores
• Overall length of 2.0 inches for ergonomic single-hand use
• NIST-traceable Certificate of Accuracy included with every unit
• Meets ASME B89.1 dimensional gage standards

Compatibility

Designed for Go inspection of 0.385-inch nominal bores and for use as a setting reference with micrometers, verniers, bore gages, and comparable dimensional measuring instruments.

Installation Notes

Plug gages are handled and used by quality technicians and machinists trained in dimensional metrology. Store the gage in its protective case when not in use to prevent surface damage that could affect accuracy. Clean the gage and the workpiece bore before use to remove chips, coolant, or debris that could cause a false reading. Never force the gage into a bore; steady, light hand pressure is the correct technique to avoid wear or damage to the gage member.