Vermont Gage 112401290 Class Zz Minus Plug Pin Gage

Product Description

The VERMONT GAGE 112401290 is a Class ZZ Minus plug pin gage machined from steel and used to perform NoGo dimensional inspection on precision bores and holes. The gage measures a nominal diameter of 1.29 mm with a tolerance of 0.00508 mm, making it suited for high-accuracy inspection work where tight conformance to dimensional standards is required. Overall length is 2 inches. Each unit ships with a Certificate of Accuracy that includes NIST traceability, supporting quality management and calibration documentation requirements. Machinists, quality technicians, and metrologists are the primary users of this tool.

This plug pin gage is used in manufacturing, inspection, and metrology environments where hole diameter conformance must be verified to close tolerances. Typical applications include NoGo inspection of drilled, reamed, or bored holes, as well as use alongside set micrometers, verniers, and other precision measuring devices. The 1.29 mm diameter makes this gage appropriate for small-bore inspection work common in precision machining, medical device manufacturing, and aerospace component production. It is designed for bench or floor inspection use by trained quality personnel.

Key Features

• Class ZZ Minus tolerance class — suitable for NoGo inspection applications
• 1.29 mm nominal diameter with 0.00508 mm tolerance for precise conformance checking
• Steel construction for durability and dimensional stability
• 10 Microfinish surface coating for consistent gage contact and wear resistance
• Includes Certificate of Accuracy with NIST traceability for audit and calibration records
• 2-inch overall length for easy handling on the bench or inspection floor

Compatibility

Designed for use in NoGo inspection routines and as a reference standard for setting micrometers, verniers, and other precision measuring devices requiring a 1.29 mm diameter reference.

Installation Notes

Pin gages are handled and stored by quality technicians and metrologists following standard metrology practices. Clean the gage and the bore being checked before use to prevent contamination that could affect measurement accuracy. Store the gage in its protective case when not in use to prevent damage to the precision-ground surface. Do not use this gage as a drift pin or apply lateral force, as this can alter the ground diameter and invalidate calibration.