Vermont Gage 102100200 Class Zz Plug Gage Set 185 Pc

Product Description

The VERMONT GAGE 102100200 is a 185-piece Class ZZ plug gage set covering a diameter range of 1.3 mm to 4.98 mm. Each gage in the set carries a plus tolerance of 0.005 mm, meeting Class ZZ standards for go-gage inspection work. The gages are manufactured from steel for durability under repeated use in shop and inspection environments. Every set ships with a Certificate of Accuracy that is NIST traceable, making it suitable for documented quality control programs. Metrology technicians, toolroom machinists, and quality inspectors use this set to verify hole diameters, slot widths, and feature locations with a high degree of confidence.

This plug gage set is used in precision measurement applications across manufacturing, machining, and inspection departments. Typical tasks include go-gage inspection of drilled or reamed holes, measuring slot widths and locations, calculating distances between holes, and setting micrometers, verniers, and other measuring devices to known reference diameters. The 1.3 mm to 4.98 mm range makes it well suited for small-bore inspection work common in aerospace, automotive, and general machining environments. The 185-piece coverage provides close step intervals across the range, reducing the need for interpolation.

Key Features

• 185 individual plug gages covering 1.3 mm to 4.98 mm diameter range
• Class ZZ tolerance classification with plus tolerance of 0.005 mm per gage
• Steel construction for wear resistance and dimensional stability
• Includes Certificate of Accuracy with NIST traceable documentation
• Suitable for go-gage inspection, slot width measurement, hole diameter verification, and reference setting of measuring instruments

Compatibility

Designed for use as a Class ZZ plug gage set in standard go-gage inspection applications where hole diameters between 1.3 mm and 4.98 mm must be verified to NIST traceable standards.

Installation Notes

Plug gages should be handled and stored according to standard metrology practices to prevent damage to gage surfaces. Clean contact surfaces before use and allow gages to reach ambient temperature to avoid thermal expansion errors. Do not force a plug gage into a hole; apply only light hand pressure during inspection. Periodic recalibration against NIST traceable references is recommended to maintain measurement integrity.