Vermont Gage 112309910 Class Zz Plus Plug Gage 9.91 Mm

Product Description

The VERMONT GAGE 112309910 is a Class ZZ Plus plug gage designed for precise go inspection of bored holes, machined features, and other inside diameter applications. It measures 9.91 mm in diameter with a tolerance of 0.00508 mm (0.005 mm nominal), providing the accuracy required for quality control workflows in machine shops, tool rooms, and production environments. Constructed from tool steel and finished to a 10 microfinish surface, it delivers consistent, repeatable contact without damaging the workpiece bore. Each unit ships with a Certificate of Accuracy traceable to NIST, supporting documentation requirements under calibrated inspection programs. Licensed metrologists, machinists, and quality technicians are the primary users.

This plug gage is suited for go inspection tasks where tight dimensional control is required on inside diameters near 9.91 mm. It is compatible with standard gage handle systems and works alongside set micrometers, verniers, and other precision measuring devices for calibration and verification routines. Typical applications include production floor inspection, incoming material verification, and toolroom setup confirmation in light manufacturing and precision machining environments. The gage is appropriate for both single-use verification passes and repeated inspection cycles within a controlled quality program.

Key Features

• Class ZZ Plus tolerance grade at 0.00508 mm for high-precision go inspection
• Tool steel construction for wear resistance and dimensional stability
• 10 microfinish surface coating minimizes bore contact damage during inspection
• Includes Certificate of Accuracy with NIST traceability for calibration documentation
• Conforms to ASME B89.1 dimensional measurement standards
• Overall length of 2.0000 inches for compatibility with standard plug gage handles

Compatibility

Designed for use in go inspection applications with set micrometers, verniers, and other precision measuring devices as noted in the product specification. Fits standard plug gage handle systems appropriate for the 9.91 mm diameter class.

Installation Notes

Plug gages of this type are handled and used by machinists and quality technicians following shop-floor or toolroom inspection procedures. Before use, clean the gage and workpiece bore thoroughly to remove chips, coolant, and debris that could affect the reading or damage the gage surface. Never force a plug gage into a bore; apply light, consistent pressure in line with the bore axis only. Store in a protected case away from temperature extremes to maintain dimensional stability and NIST-traceable calibration status.