Vermont Gage 112119420 Class Zz Plus Plug Gage 19.42mm

Product Description

The VERMONT GAGE 112119420 is a Class ZZ Plus cylindrical plug gage machined from tool steel and sized to a 19.42 mm nominal diameter. It is designed for go-type inspection of bored holes, drilled passages, and machined features where dimensional conformance to ASME B89.1 standards is required. The gage holds a tolerance of 0.005 mm (0.00508 mm actual), making it suitable for precision measurement workflows. Each unit ships with a Certificate of Accuracy that carries full NIST traceability, supporting quality documentation requirements in production and inspection environments. Machinists, quality control technicians, and tool-room professionals are the primary users of this gage.

This plug gage is applied in go inspection routines to verify that a feature is within its minimum acceptable size limit. Typical applications include checking machined bores on CNC-turned or milled components, calibrating or verifying setting masters for micrometers, verniers, and other variable measuring devices, and supporting first-article and in-process inspection on the shop floor. The 19.42 mm size fits common metric bore applications in both light manufacturing and precision machining operations. The overall length of 2.0000 inches suits standard gage handle systems.

Key Features

• Class ZZ Plus tolerance of 0.005 mm for reliable go-inspection accuracy
• Tool steel construction for hardness and wear resistance during repeated use
• 10 Micro surface finish coating supports consistent contact with machined bores
• Includes Certificate of Accuracy with NIST traceability for quality documentation
• Conforms to ASME B89.1 dimensional gage standards
• Compatible with setting micrometers, verniers, and other measuring devices as a reference master

Compatibility

Suitable for go inspection of 19.42 mm diameter bored or machined features, and for use as a setting reference with micrometers, verniers, and other variable measuring devices per the application data provided.

Installation Notes

Plug gages are handled and applied by quality technicians and machinists following standard metrology practice. Before use, clean the gage and the bore being checked with a lint-free cloth to remove chips, coolant, and debris that would affect the reading. Apply only hand pressure when inserting the gage into a bore — never force a plug gage, as this damages the gage and the workpiece. Store the gage in its protective case away from other tooling to prevent nicks and corrosion on the ground surface.