Vermont Gage 112111780 Class Zz Plus Plug Gage 11.78 Mm

Product Description

The VERMONT GAGE 112111780 is a Class ZZ Plus plug gage machined from tool steel for precise go inspection of bored holes, machined bores, and other critical internal dimensions. Sized at 11.78 mm diameter with a tolerance of 0.00508 mm, this gage delivers reliable pass/fail verification in production and inspection environments. An overall length of 2.0000 inches allows comfortable single-hand use in bench or floor inspection settings. Each unit ships with a Certificate of Accuracy that carries full NIST traceability, supporting quality management documentation requirements. Machinists, quality technicians, and metrology professionals install and use this gage as part of standard dimensional inspection workflows.

This plug gage is suited for go inspection tasks on machined components where bore diameter must be verified to tight tolerances. It is commonly used alongside set micrometers, verniers, and other precision measuring devices to confirm that internal features meet drawing specifications. Typical applications include incoming inspection, in-process quality checks, and final acceptance testing in machine shops, tool rooms, and manufacturing facilities. The 11.78 mm size fits applications requiring sub-millimeter tolerance verification on small to mid-range bore diameters.

Key Features

• Class ZZ Plus tolerance grade with 0.00508 mm tolerance for high-accuracy go inspection
• Tool steel construction for durability and resistance to wear in repeated use
• 10 microfinish surface coating for consistent gage-to-bore contact
• Includes Certificate of Accuracy with NIST traceability for audit and quality documentation
• Conforms to ASME B89.1 standard for dimensional gaging
• Overall length of 2.0000 inches for practical bench and floor use

Compatibility

Designed for use as a go plug gage with set micrometers, verniers, and other precision measuring devices per the ASME B89.1 standard for dimensional inspection of 11.78 mm bores.

Installation Notes

Plug gages are handled and used by quality technicians and machinists trained in dimensional inspection procedures. Handle the gage with clean, dry hands or lint-free gloves to prevent corrosion from skin oils. Before use, verify the gage is at ambient temperature to avoid thermal expansion errors. Store in a protective case when not in use and inspect periodically for wear or damage per your facility calibration schedule.