Vermont Gage 111176900 Class Zz Plus Plug Gage 0.769 in

Product Description

The VERMONT GAGE 111176900 is a Class ZZ Plus plug gage designed for dimensional inspection of machined bores and holes. This gage measures a nominal diameter of 0.769 inches with a tolerance of 0.0002 inches and a surface finish of 10 microinches, making it suitable for go-inspection applications where consistent, repeatable measurements are required. Manufactured from tool steel, it delivers the durability and dimensional stability expected in production and quality-control environments. Each unit ships with a Certificate of Accuracy traceable to NIST, supporting documentation requirements in ISO and ASME-compliant inspection programs. Installation and use require no special tools beyond a clean, calibrated work surface.

This plug gage is used in metrology and quality-control settings to verify bore diameters on machined components. It is appropriate for use alongside set micrometers, verniers, and other measuring devices as a reference or go-gage check. Typical applications include incoming inspection, in-process checks on CNC-machined parts, and final inspection in job shops, toolrooms, and manufacturing facilities. The 2.0-inch overall length provides adequate handle clearance for standard bore-entry procedures. Machinists, quality technicians, and calibration lab personnel are the primary users of this gage.

Key Features

• Class ZZ Plus tolerance of 0.0002 inches for high-accuracy go inspection
• 10-microinch surface finish on the gage member for consistent contact and reduced wear
• Tool steel construction for dimensional stability and long service life
• Includes Certificate of Accuracy with NIST traceability for documentation compliance
• Conforms to ASME B89.1 standard for plain plug gages
• Overall length of 2.0 inches suited for standard bore-entry inspection

Compatibility

Designed as an OEM-style go plug gage for verifying 0.769-inch nominal bore diameters in accordance with ASME B89.1; compatible for use with set micrometers, verniers, and other calibrated measuring devices as stated by the manufacturer.

Installation Notes

Plug gages should be handled by a qualified machinist or quality technician following standard metrology practices. Clean and deburr the bore before insertion to prevent gage damage and false readings. Never force the gage into a bore; apply only light, consistent hand pressure to avoid deflection or surface damage. Store the gage in its protective case away from heat sources and corrosive environments to maintain calibration integrity.