Vermont Gage 111166800 Class Zz Plus Plug Gage 0.668 in

Product Description

The VERMONT GAGE 111166800 is a Class ZZ Plus plug gage designed to measure bore and hole diameters with high precision. Built from tool steel, this gage carries a measurement diameter of 0.668 inches, an overall length of 2.0 inches, and a tolerance of 0.0002 inches. The 10 microfinish surface finish on the gage member ensures consistent, repeatable contact during inspection. Each unit ships with a Certificate of Accuracy with NIST traceability, making it suitable for documented quality control processes. Machinists, quality technicians, and toolroom personnel use this type of gage for go-inspection applications where tight dimensional verification is required.

This plug gage is used in go inspection routines for verifying that bored, drilled, or reamed holes meet minimum diameter specifications. It also serves as a setting standard for set micrometers, verniers, and other measuring devices where a certified reference diameter is needed. Typical environments include machine shops, toolrooms, production floors, and calibration labs handling precision mechanical components. The Class ZZ Plus designation indicates compliance with ASME B89.1 standards, placing it in the higher-accuracy tier of plain plug gages commonly used in dimensional inspection workflows.

Key Features

• Measurement diameter of 0.668 inches with a tolerance of 0.0002 inches
• 10 microfinish surface finish for consistent gage contact and reduced wear
• Tool steel construction for durability in production and toolroom environments
• Meets ASME B89.1 standards for dimensional gaging
• Includes Certificate of Accuracy with NIST traceability for documented QC compliance
• Suitable for use as a setting reference for micrometers, verniers, and similar instruments

Compatibility

Designed for go inspection of holes and bores at 0.668 inches diameter, and for use as a certified setting standard with set micrometers, verniers, and other precision measuring devices requiring a traceable reference.

Installation Notes

Plug gages are handled and used by quality technicians and machinists; no power tools or electrical shutoff procedures apply. Store the gage in its protective case when not in use and handle with clean, dry hands or cotton gloves to prevent corrosion from skin oils. Do not force the gage into an undersized hole, as this can damage the gage member and invalidate its calibration status. Re-verify NIST traceability documentation at intervals consistent with your facility quality management plan.