Vermont Gage 111329950 Class Zz Plus Plug Gage 0.2995 in

Product Description

The VERMONT GAGE 111329950 is a Class ZZ Plus plug gage machined from tool steel and used to perform go inspection checks on bored holes, drilled passages, and other cylindrical features. It measures a nominal diameter of 0.2995 inches with a tolerance of 0.0002 inches, providing the tight dimensional control that precision inspection requires. The gage carries a 10 microfinish surface treatment, which minimizes wear on the contact surface and the workpiece. Each unit ships with a Certificate of Accuracy traceable to NIST, supporting quality documentation requirements in manufacturing and metrology environments. Machinists, quality technicians, and tool-room personnel are the typical users of this type of gage.

This plug gage is suited for go inspection of holes and bores in production and inspection settings where dimensional conformance to close tolerances must be verified. It is also used to calibrate and verify the accuracy of set micrometers, verniers, and other handheld measuring devices. At 2.0 inches overall length, it handles comfortably in bench and floor inspection applications. The Class ZZ Plus designation places it within the tolerance class defined by ASME B89.1, making it appropriate for general-purpose inspection work across light manufacturing, tooling, and quality-assurance departments.

Key Features

• 0.2995 inch nominal measurement diameter for precise go inspection
• 0.0002 inch tolerance per ASME B89.1 Class ZZ Plus specification
• 10 microfinish surface for reduced wear and extended service life
• Tool steel construction provides hardness and dimensional stability
• Certificate of Accuracy with NIST traceability included for quality documentation
• 2.0 inch overall length suits standard bench and handheld inspection use

Compatibility

Designed for go inspection of cylindrical holes and bores at 0.2995 inches nominal diameter, and suitable for setting and verifying set micrometers, verniers, and other precision measuring devices requiring a traceable reference standard.

Installation Notes

Plug gages are handled and used by quality technicians and machinists; no power tools or electrical shutoff is required. Store the gage in its protective case when not in use to prevent corrosion and surface damage to the tool steel. Clean the gage surface and the workpiece bore before inspection to avoid false readings caused by chips or coolant residue. Handle with clean gloves or wipers to prevent skin oils from affecting the calibrated surface finish.