Vermont Gage 112121680 Class Zz Plus Plug Gage 21.68mm

Product Description

The VERMONT GAGE 112121680 is a Class ZZ Plus plug gage designed for precision bore and hole inspection in metrology, quality control, and manufacturing environments. It measures 21.68 mm in diameter and is manufactured from tool steel with a 10 micro finish. The gage carries a tolerance of 0.005 mm, making it appropriate for Go inspection tasks where accurate dimensional verification is required. A Certificate of Accuracy with NIST traceability is included, supporting documented calibration requirements. This type of gage is typically used by quality technicians, machinists, and inspection personnel working to ASME B89.1 standards.

This plug gage is suited for Go inspection of bored holes, machined openings, and other cylindrical features at 21.68 mm nominal diameter. It is also appropriate for setting and verifying micrometers, verniers, and other measuring devices. Applications span precision machining shops, inspection departments, tool rooms, and manufacturing quality control environments where ASME B89.1 compliance is required. The included NIST-traceable Certificate of Accuracy supports ISO and AS9100 quality system documentation requirements.

Key Features

• Class ZZ Plus tolerance classification with 0.005 mm tolerance for Go inspection
• Tool steel construction for wear resistance and dimensional stability
• 10 micro surface finish for consistent gage-to-workpiece contact
• NIST-traceable Certificate of Accuracy included for quality documentation
• Conforms to ASME B89.1 standards
• Compatible with micrometers, verniers, and other precision measuring devices as a setting reference

Compatibility

Designed for Go inspection of 21.68 mm diameter features and for use as a setting standard with micrometers, verniers, and other precision measuring devices per ASME B89.1.

Installation Notes

Plug gages are handled and used by trained quality technicians and machinists in inspection environments. Clean the gage and workpiece bore before use to prevent debris from affecting measurement accuracy. Do not force the gage into a feature; excessive insertion force can damage both the gage and the workpiece. Store in a protective case away from temperature extremes to maintain dimensional integrity.