Vermont Gage 112301550 Class Zz Plus Plug Gage 1.55 Mm

Product Description

The VERMONT GAGE 112301550 is a Class ZZ Plus cylindrical plug gage designed for precision dimensional inspection of small bores and holes. Manufactured from tool steel with a 10 microfinish surface coating, this gage checks whether a feature meets its lower size limit in go inspection applications. It carries a Certificate of Accuracy with NIST traceability and conforms to ASME B89.1 standards. The 1.55 mm diameter and 0.005 mm tolerance make it appropriate for close-tolerance inspection work in metrology labs and on the shop floor. Overall length is 2.0 inches. Weight is 0.01 pounds.

This plug gage is used wherever small-diameter bore acceptance requires a repeatable, traceable measurement standard. Typical applications include go inspection of precision-machined bores, calibration setups for micrometers, verniers, and other measuring devices. Metrology technicians and quality control inspectors use this gage in both production and incoming inspection environments. It is suited for light industrial, aerospace, and medical manufacturing contexts where bore tolerance verification is critical.

Key Features

• 1.55 mm diameter with 0.005 mm tolerance for close-tolerance go inspection
• Tool steel construction for wear resistance and dimensional stability
• 10 microfinish surface coating for consistent, low-friction gage contact
• Certificate of Accuracy included with full NIST traceability
• Conforms to ASME B89.1 dimensional gage standards
• Compact at 2.0 inches overall length — suited for benchtop and portable inspection use

Compatibility

Designed as an OEM-style go plug gage for use with standard gage handle systems and as a reference standard for setting micrometers, verniers, and comparable measuring instruments.

Installation Notes

Plug gages of this type are handled and used by metrology technicians and quality inspectors — no power tools or mechanical installation is required. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the tool steel surface. Do not apply lateral force during inspection passes; enter the bore axially to avoid false readings and premature wear. Store in the provided case or a clean, dry instrument drawer away from temperature extremes.