Vermont Gage 112315210 Class Zz Plus Plug Gage 15.21mm

Product Description

The VERMONT GAGE 112315210 is a Class ZZ Plus plug gage machined from tool steel and used to verify bore diameters in precision inspection applications. This gage checks a 15.21 mm diameter with a tolerance of 0.00508 mm, making it suitable for go inspection workflows where tight dimensional control is required. Each unit ships with a Certificate of Accuracy that carries NIST traceability, confirming the gage meets ASME B89.1 standards. The 10 micro coating provides a consistent, wear-resistant working surface. At 2.0000 inches overall length, it fits standard gage handle systems used on the shop floor or in a metrology lab.

This plug gage is used in quality control and inspection settings across manufacturing, machining, and fabrication environments. It is designed for go inspection checks and is compatible with use alongside set micrometers, verniers, and other precision measuring devices. Typical applications include incoming inspection, in-process checks on bored or reamed holes, and final dimensional verification before assembly. Machinists, quality technicians, and metrologists are the primary users of this gage type.

Key Features

• Class ZZ Plus tolerance grade — 0.00508 mm tolerance for high-accuracy go inspection
• Tool steel construction for durability and dimensional stability
• 10 micro surface coating for consistent gage wear performance
• NIST-traceable Certificate of Accuracy included with each unit
• Meets ASME B89.1 standards for plain plug gages
• 2.0000 inch overall length fits standard gage handle assemblies

Compatibility

Designed for use with standard plug gage handle systems and compatible with set micrometers, verniers, and other precision measuring devices per ASME B89.1 inspection protocols.

Installation Notes

Plug gages are handled and used by quality technicians and machinists — no permanent installation is required. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the tool steel surface. Allow the gage and workpiece to equalize to the same ambient temperature before measuring to avoid thermal expansion errors. Do not force the gage into a bore; if resistance is felt during a go check, the bore is undersize and requires further machining.