Vermont Gage 111238100 Class Zz Minus Plug Pin Gage 0.3810 in

Product Description

The VERMONT GAGE 111238100 is a Class ZZ Minus plug pin gage used to perform NoGo inspection on machined bores, holes, and features requiring precise dimensional verification. At 0.3810 inches in diameter with a tolerance of 0.0002 inches, this gage delivers the accuracy required for quality control in manufacturing and machining environments. The 2-inch overall length provides a manageable form factor for handheld use. Each unit ships with a Certificate of Accuracy traceable to NIST, making it suitable for documented inspection processes. Machinists, quality control technicians, and tool-room personnel are the primary users of this type of gage.

This plug pin gage is designed for NoGo inspection applications, confirming that a hole or bore does not exceed the maximum allowable size limit. It is also used to set and verify micrometers, verniers, and other precision measuring instruments. Typical use environments include machine shops, production floors, and metrology labs where dimensional tolerances must be held to close specifications. The minus tolerance class designation indicates the gage is ground below nominal diameter, consistent with NoGo plug gage standards.

Key Features

• Class ZZ Minus tolerance class for NoGo plug gage applications
• 0.3810 inch measurement diameter with 0.0002 inch tolerance
• 2 inch overall length for comfortable handheld use
• 10 Microfinish surface coating for smooth, accurate contact with the measured feature
• Steel construction for durability and dimensional stability
• Includes Certificate of Accuracy with NIST Traceability for documented quality processes

Compatibility

Designed for use as a NoGo plug gage in standard bore and hole inspection workflows, and as a setting reference for micrometers, verniers, and other precision measuring devices requiring a 0.3810 inch reference diameter.

Installation Notes

Plug pin gages are handled and used by machinists and quality control technicians, not installed in the traditional sense. Store the gage in its protective case when not in use to prevent corrosion and damage to the precision-ground surface. Never force the gage into a feature — a NoGo gage should not enter a correctly sized hole, and forcing it can damage both the gage and the workpiece. Clean contact surfaces before use and handle with care to avoid introducing measurement error from contaminants or dings.