Vermont Gage 112204480 Class Zz Minus Plug Pin Gage 4.48mm

Product Description

The VERMONT GAGE 112204480 is a Class ZZ Minus plug pin gage designed for precise dimensional inspection of bored holes, machined bores, and other critical inside-diameter features. Manufactured from steel with a 10 microfinish surface coating, this pin gage measures a nominal diameter of 4.48 mm with a tolerance of 0.00508 mm. At an overall length of 2 inches, it provides a compact, handheld form factor suited for bench inspection and inline quality control. Each unit ships with a Certificate of Accuracy traceable to NIST, making it suitable for calibrated inspection environments and documentation requirements. Machinists, toolroom technicians, and quality control inspectors use this gage as part of go/no-go inspection routines.

This pin gage is intended for NoGo inspection applications, confirming that a bore does not exceed its maximum allowable diameter. It is also used to set and verify micrometers, verniers, and other measuring instruments during calibration and setup procedures. Typical use cases include incoming inspection of machined components, process verification during production runs, and calibration lab setups. The compact size and steel construction make it appropriate for both shop-floor and lab environments where close-tolerance work is performed regularly.

Key Features

• Class ZZ Minus tolerance class - designed specifically for NoGo inspection of inside-diameter features
• 4.48 mm nominal measurement diameter with 0.00508 mm tolerance for close-tolerance inspection work
• Steel construction with 10 microfinish surface coating for consistent, accurate contact readings
• Overall length of 2 inches for easy handling at the bench or on the production floor
• Includes a Certificate of Accuracy with NIST traceability for documentation and calibration records
• Compatible with use as a setting standard for micrometers, verniers, and other measuring devices

Compatibility

Designed for NoGo bore inspection and as a setting standard for micrometers, verniers, and other measuring devices requiring a 4.48 mm reference diameter.

Installation Notes

Pin gages are handled and used by metrology technicians, toolroom machinists, and quality control personnel - not installed in a mechanical system. Store the gage in its protective case when not in use to prevent surface damage. Clean contact surfaces before each use and avoid applying lateral force during insertion, which can introduce measurement error or cause gage wear. Calibration intervals should follow your facility quality management plan or applicable standards such as ISO 10012.