Vermont Gage 112103180 Class Zz Plus Plug Gage 3.18mm

Product Description

The VERMONT GAGE 112103180 is a Class ZZ Plus plug gage used to verify bore and hole dimensions to close tolerance in production and inspection environments. The gage measures a nominal diameter of 3.18 mm with a tolerance of 0.00508 mm, making it suitable for high-precision Go inspection applications. Constructed from tool steel and finished to a 10 microfinish surface, it delivers consistent, reliable readings across repeated measurements. A Certificate of Accuracy with NIST traceability is included, satisfying documentation requirements for quality management systems. Licensed machinists, quality technicians, and metrologists typically use this gage at inspection stations and on the shop floor.

This plug gage is designed for Go inspection of drilled, reamed, or bored holes at or near the 3.18 mm nominal size. It is also used to set and verify micrometers, verniers, and other measuring devices requiring a calibrated reference standard. Typical installations are found in precision machining shops, aerospace component inspection, medical device manufacturing, and toolroom environments where tight dimensional control is required. The 2.0 inch overall length suits standard plug gage handles and wire-style holders.

Key Features

• Class ZZ Plus tolerance of 0.00508 mm for high-precision Go inspection
• Tool steel construction for durability and dimensional stability under repeated use
• 10 microfinish surface for smooth, repeatable gage entry without bore damage
• Includes Certificate of Accuracy with NIST traceability for QMS compliance
• Meets ASME B89.1 standard for plain plug gages
• 2.0 inch overall length compatible with standard plug gage handles and holders

Compatibility

Designed as an OEM-style replacement or working gage for use with standard plug gage handles accepting wire-style or solid plug gage blanks at the 3.18 mm diameter range. Suitable for setting micrometers, verniers, and other measuring devices requiring a traceable reference standard.

Installation Notes

Plug gages should be installed and used by qualified quality technicians or machinists familiar with ASME B89.1 inspection practices. Always clean the gage and the bore with a lint-free cloth before use to remove debris that could affect measurement accuracy. Do not force the gage into the bore; apply only light hand pressure to avoid galling the gage surface or damaging the workpiece. Store in a protective case away from heat sources and corrosive environments to maintain calibration integrity.