Vermont Gage 111337450 Class Zz Plus Plug Gage 0.3745 in

Product Description

The VERMONT GAGE 111337450 is a Class ZZ Plus cylindrical plug gage designed to verify bore and hole diameters to a 0.3745-inch nominal size. Manufactured from tool steel with a 10 microfinish surface, this gage delivers the dimensional accuracy required for Go inspection work in precision metrology applications. The 0.0002-inch tolerance holds to ASME B89.1 standards, and each unit ships with a Certificate of Accuracy backed by NIST traceability. Licensed metrologists, quality control technicians, and tool room professionals rely on this type of gage to confirm that machined bores fall within specified limits before parts advance to the next stage of production.

This plug gage is suited for Go inspection of drilled, reamed, or bored holes measuring 0.3745 inches in diameter. It is also used to calibrate and verify the accuracy of set micrometers, verniers, and other measuring devices where a traceable reference standard is required. Applicable in both production-floor inspection stations and precision metrology labs, the gage supports quality assurance workflows in manufacturing environments governed by tight dimensional tolerances.

Key Features

• Class ZZ Plus tolerance of 0.0002 inches for high-accuracy Go inspection
• 10 microfinish surface for consistent gage-to-bore contact and repeatable readings
• Tool steel construction for durability and wear resistance in regular inspection use
• Meets ASME B89.1 dimensional gage standards
• Includes Certificate of Accuracy with NIST traceability for audit and calibration records
• Overall length of 2.0 inches for comfortable handling during inspection

Compatibility

Designed as a Go inspection reference standard for bores and holes with a 0.3745-inch nominal diameter, and suitable for setting and verifying set micrometers, verniers, and other precision measuring devices requiring a traceable plug gage reference.

Installation Notes

Plug gages of this type are handled by quality control technicians and metrologists, not field tradespeople. Store the gage in its protective case when not in use to prevent surface damage and corrosion. Clean the gage pin and the bore being inspected before use to avoid debris-induced false readings. Do not force the gage into an undersized bore, as this will damage the precision-ground surface and invalidate the NIST-traceable certification.