Vermont Gage 912101020 Class Zz Plus Plug Gage 1.02 Mm

Product Description

The VERMONT GAGE 912101020 is a Class ZZ Plus plug gage designed for precision dimensional inspection of small-diameter bores and holes. Built from tool steel with a black oxide finish, this gage measures a nominal diameter of 1.02 mm with a tolerance of 0.00508 mm (0.005 mm), making it suitable for high-accuracy go inspection work. The overall length is 2.0000 inches. Each unit ships with a Certificate of Accuracy traceable to NIST, supporting quality documentation requirements in manufacturing and metrology environments. It is installed and used by machinists, quality control technicians, and metrologists.

This plug gage is used in go inspection applications to verify that a bore or hole meets minimum dimensional requirements. It is also used to set and verify micrometers, verniers, and other measuring devices. Typical applications include incoming inspection, in-process quality checks, and calibration of hand measuring tools in machine shops, tool rooms, and manufacturing facilities handling precision components. The 1.02 mm diameter makes it well suited for small-bore work common in fine machining and instrument manufacturing.

Key Features

• Class ZZ Plus tolerance grade: 0.00508 mm (0.005 mm) for precision go inspection
• Tool steel construction for hardness and dimensional stability
• Black oxide finish for corrosion resistance and reduced glare during use
• Includes Certificate of Accuracy with NIST traceability for quality records
• Conforms to ASME B89.1 dimensional standards
• Overall length of 2.0000 inches for consistent hand-held use

Compatibility

Designed for go inspection of 1.02 mm diameter bores and for setting micrometers, verniers, and other measuring devices. Compatible with standard plug gage handles and inspection fixtures sized for the 1.02 mm diameter range.

Installation Notes

Plug gages should be handled with clean, dry hands or lint-free gloves to prevent contamination and corrosion from skin oils. Before use, verify the gage is clean and free of debris that could affect the measurement reading. Store in a protective case away from abrasive tools and surfaces to maintain dimensional integrity. Periodic recalibration against NIST-traceable standards is recommended per your facility quality management program.