Vermont Gage 112217780 Class Zz Minus Plug Pin Gage 17.78mm

Product Description

The VERMONT GAGE 112217780 is a Class ZZ Minus plug pin gage used to verify bore diameters during NoGo inspection procedures. Machined from steel with a 10 micro finish, this pin gage measures a nominal diameter of 17.78 mm and holds a tolerance of 0.00508 mm. At 2 inches in overall length and 0.22 pounds, it is sized for bench or handheld use in precision measurement applications. Each unit ships with a Certificate of Accuracy that carries NIST traceability, supporting quality documentation requirements in production and inspection environments. Licensed metrologists, QC technicians, and machining professionals rely on this class of gage for consistent, repeatable dimensional verification.

This pin gage is suited for dimensional inspection tasks where a NoGo member is required to confirm that a bore or hole does not exceed its maximum material condition limit. Typical applications include setting and verifying micrometers, verniers, and other measuring devices to a known reference diameter. It is appropriate for use in machine shops, manufacturing facilities, and quality inspection labs handling metric workpieces in the 17.78 mm range.

Key Features

• Class ZZ Minus tolerance class - 0.00508 mm tolerance for NoGo inspection use
• Steel construction with 10 micro surface finish for consistent gage wear characteristics
• 2 inch overall length suits standard bench and hand-held inspection setups
• Includes Certificate of Accuracy with NIST traceability for audit and documentation compliance
• Suitable for setting micrometers, verniers, and comparable measuring instruments to a 17.78 mm reference

Compatibility

Designed for NoGo bore inspection and instrument calibration reference in applications requiring a 17.78 mm Class ZZ Minus plug pin gage, including use with micrometers, verniers, and other precision measuring devices.

Installation Notes

Pin gages should be handled with clean, dry hands or lint-free gloves to prevent corrosion from skin oils. Before use, inspect the gage surface for nicks or burrs that could affect measurement accuracy. Store the gage in its protective case when not in use to maintain the precision finish. Calibration intervals should follow the facility quality plan and any applicable metrology standards.