Vermont Gage 901100400 Class Zz Plug Gage Set 190 Pc

Product Description

The VERMONT GAGE 901100400 is a Class ZZ plug gage set covering a diameter range of 0.061 to 0.25 inches in 190 individual gages. Built from steel with a black oxide finish, each gage holds a plus-tolerance of 0.0002 inches, meeting NIST Traceable standards. The set is used to verify hole diameters, slot widths, and hole-to-hole spacing with repeatable precision. Machinists, quality-control technicians, and toolroom professionals rely on sets like this for go-gage inspection and for calibrating or setting micrometers, verniers, and other measuring instruments. A Certificate of Accuracy with NIST Traceability is included with every set.

This plug gage set is suited for precision inspection work in machine shops, manufacturing floors, and toolrooms handling small-diameter bore verification. Typical applications include measuring hole diameters, gaging slot widths and locations, calculating distances between holes, and setting handheld measuring devices to known reference values. The 190-piece range makes the set practical for shops working across a wide variety of close-tolerance hole sizes in the 0.061 to 0.25 inch range without needing to source individual wire gages separately.

Key Features

• 190-piece set covers 0.061 to 0.25 inches in diameter range
• Class ZZ tolerance of plus 0.0002 inches per gage
• Steel construction with black oxide finish for corrosion resistance and durability
• NIST Traceable Certificate of Accuracy included
• Suitable for go-gage inspection, hole diameter measurement, and instrument calibration
• Plus-tolerance type conforms to standard Class ZZ gage specifications

Compatibility

Designed for use as a Class ZZ plug gage set in precision inspection and quality-control applications requiring diameter verification in the 0.061 to 0.25 inch range.

Installation Notes

Plug gages are handled and used by quality technicians and machinists - no power source or mechanical installation is required. Store gages in their designated slots or case to prevent damage to gage surfaces. Clean and lightly oil gage pins before storage to maintain finish and dimensional integrity. Handle with care to avoid dropping, which can alter the gage diameter or damage the black oxide finish.