Vermont Gage 111342050 Class Zz Plus Plug Gage

Product Description

The VERMONT GAGE 111342050 is a Class ZZ Plus plug gage designed to verify hole diameters with precise dimensional accuracy. Built from tool steel with a 10 microfinish surface, it measures a nominal diameter of 0.4205 inches with a tolerance of 0.0002 inches. At 2.0 inches overall length, it is sized for handheld use in production, inspection, and quality control environments. Each unit ships with a Certificate of Accuracy that carries NIST traceability, making it suitable for documented inspection processes. Machinists, quality technicians, and metrology professionals install and use this gage.

This plug gage is used in go inspection applications to confirm that a bored or drilled hole meets minimum diameter specifications before assembly or further machining. It is also applied when setting micrometers, verniers, and other measuring devices to a known reference diameter. Typical environments include machine shops, manufacturing floors, and inspection labs handling precision components in both job shop and high-volume production settings.

Key Features

• Class ZZ Plus tolerance grade with 0.0002 inches tolerance for reliable go inspection
• 10 microfinish surface for consistent, low-friction gage contact
• Tool steel construction for durability in frequent production use
• NIST-traceable Certificate of Accuracy included with each unit
• Manufactured to ASME B89.1 standard
• Compact 2.0 inches overall length for easy single-hand operation

Compatibility

Designed for go inspection of holes at 0.4205 inches nominal diameter and for use as a reference setting standard with micrometers, verniers, and comparable measuring instruments.

Installation Notes

Plug gages are handled and stored by quality technicians and machinists following standard metrology practices. Before use, clean the gage and the workpiece bore with a lint-free cloth to remove chips, coolant, or debris that could affect the reading. Never force the gage into a bore; apply only light, steady axial pressure. Store the gage in its case when not in use to protect the lapped surface and preserve calibration integrity.