Vermont Gage 112119900 Class Zz Plus Plug Gage 19.9mm

Product Description

The VERMONT GAGE 112119900 is a Class ZZ Plus cylindrical plug gage machined from tool steel and used to verify bore diameters to a tolerance of 0.00508 mm. Rated for go inspection service, this gage confirms that a bored or reamed feature falls within the acceptable dimensional range before a part moves to the next stage of production. The 19.90 mm nominal diameter and 10 micro finish on the gaging surface deliver consistent, repeatable contact across measurement cycles. A Certificate of Accuracy with NIST Traceability is included, supporting quality-system documentation requirements under ASME B89.1. Overall length is 2.0000 inches. Machinists, quality technicians, and tool room personnel are the primary users.

This plug gage is suited to production and inspection environments where bore diameter conformance must be confirmed quickly and reliably. Typical applications include go inspection of drilled, bored, reamed, or ground holes in metal, plastic, and composite workpieces. The gage is also used to set and verify micrometers, verniers, and other measuring devices where a traceable reference standard is required. It fits naturally into any quality workflow governed by ASME B89.1 dimensional standards.

Key Features

• Class ZZ Plus tolerance rating for go inspection of 19.90 mm diameter bores
• Tool steel construction for wear resistance in production environments
• 10 micro finish on gaging surface for consistent, low-friction contact
• Tolerance of 0.00508 mm supports close-tolerance inspection requirements
• Includes Certificate of Accuracy with NIST Traceability for quality-system compliance
• Conforms to ASME B89.1 dimensional gage standards

Compatibility

Designed as an OEM-style go plug gage for verifying 19.90 mm nominal bore diameters and for use as a reference standard with micrometers, verniers, and other measuring devices requiring a traceable setting master.

Installation Notes

Plug gages are handled and used by quality technicians and machinists; no power source or cutting tools are required. Clean and inspect the gage surface before each use to prevent false readings caused by chips or contamination. Store the gage in its case away from heat sources and magnetic fields to preserve dimensional stability and surface finish. Calibration intervals should be established per your facility quality plan and ASME B89.1 guidance.