Vermont Gage 112319570 Class Zz Plus Plug Gage 19.57mm

Product Description

The VERMONT GAGE 112319570 is a Class ZZ Plus plug gage designed for precise dimensional inspection of bored, reamed, or machined holes. Built from tool steel with a 10 micro finish, it checks hole diameters to a tolerance of 0.00508 mm, making it suitable for Go inspection applications where tight dimensional control is required. At 2.0000 inches in overall length and a nominal diameter of 19.57 mm, this gage is a standard-format pin used by machinists, quality technicians, and metrologists on the shop floor or in the inspection lab. Each unit ships with a Certificate of Accuracy traceable to NIST, satisfying documentation requirements for ISO and AS9100 quality systems.

This plug gage is used in Go inspection routines to verify that a machined hole meets its minimum acceptable diameter. It is also used to calibrate or set micrometers, verniers, bore gages, and other measuring devices requiring a known reference standard. Typical applications include production inspection of machined parts in metalworking, aerospace, automotive, and general manufacturing environments. The 19.57 mm diameter covers a common metric bore size used across a range of precision machined components.

Key Features

• Class ZZ Plus tolerance: 0.00508 mm for high-accuracy Go inspection
• Tool steel construction for wear resistance and dimensional stability
• 10 micro finish on the gage surface for consistent, repeatable contact
• Meets ASME B89.1 standards for dimensional gaging
• Includes Certificate of Accuracy with NIST traceability for quality system compliance
• Compact 2.0000-inch overall length suits bench and in-process inspection setups

Compatibility

Designed for use as a Go plug gage for 19.57 mm diameter holes and as a setting standard for micrometers, verniers, and other measuring devices requiring a certified reference.

Installation Notes

Plug gages are handled and used by quality technicians and metrologists; no installation trade license is required, but proper metrology practice applies. Always clean the gage and the bore before use to prevent false readings or surface damage. Store the gage in its protective case when not in use to prevent corrosion or nicks that would invalidate the tolerance. Do not force the gage into a hole; apply light, consistent hand pressure only.