Vermont Gage 111320050 Class Zz Plus Plug Gage 0.2005 in

Product Description

The VERMONT GAGE 111320050 is a Class ZZ Plus plug gage ground and lapped to a 0.2005-inch diameter for precision go inspection work. Manufactured from tool steel with a 10 microfinish surface, this gage provides a reliable means of verifying whether a machined hole or bore falls within acceptable dimensional tolerance. The working tolerance is 0.0002 inches, which meets the requirements of ASME B89.1. Each unit ships with a Certificate of Accuracy with NIST traceability, making it suitable for use in calibrated inspection environments and quality-control documentation workflows. Machinists, toolmakers, quality inspectors, and metrologists are the primary users.

This plug gage is used in manufacturing and precision machining environments where hole diameter conformance must be verified before assembly. Typical applications include go inspection of drilled, reamed, or bored holes and calibration checks of setting masters for micrometers, verniers, and other measuring devices. The 0.2005-inch size fits inspection needs in light manufacturing, aerospace component work, and general metalworking shops. Overall length is 2.0 inches, making it compact enough for bench use and easy handling in tight fixture setups.

Key Features

• Class ZZ Plus tolerance grade with 0.0002-inch working tolerance per ASME B89.1
• 0.2005-inch diameter for go inspection of corresponding hole sizes
• Tool steel construction for durability and wear resistance in regular inspection use
• 10 microfinish surface for consistent, repeatable contact with the bore surface
• Includes Certificate of Accuracy with NIST traceability for calibration recordkeeping
• Compact 2.0-inch overall length suitable for bench and fixture inspection work

Compatibility

Designed for go inspection use and as a setting master for micrometers, verniers, and other measuring devices requiring a 0.2005-inch reference diameter.

Installation Notes

Plug gages do not require installation in the conventional sense but should be handled and stored following standard metrology practices. Keep the gage clean and lightly oiled when not in use to prevent corrosion of the tool steel surface. Do not force the gage through an undersize hole, as this can damage both the gage and the workpiece. Periodic recalibration against a certified reference standard is recommended to maintain traceability in quality-controlled environments.