Vermont Gage 112303470 Class Zz Plus Plug Gage 3.47mm

Product Description

The VERMONT GAGE 112303470 is a Class ZZ Plus plug gage designed for precise go-inspection of bored, drilled, and reamed holes at a nominal diameter of 3.47 mm. Manufactured from tool steel and finished to a 10 microfinish surface, this gage delivers a tolerance of 0.005 mm (0.00508 mm stated), meeting ASME B89.1 standards for dimensional gaging. Each unit ships with a Certificate of Accuracy with NIST traceability, making it suitable for use in calibrated inspection environments. Machinists, quality technicians, and metrology professionals use this gage to verify hole size acceptance during in-process and final inspection.

This plug gage is applied in go-inspection workflows to confirm that a hole falls within the lower acceptable limit of a tolerance range. It is also used to set and verify micrometers, verniers, and other measuring devices requiring a traceable reference standard. At 2.0000 inches overall length and a compact 0.01 pounds, it handles easily on the shop floor or in a quality lab. Typical installations occur in precision machining, tool and die, aerospace, and general manufacturing environments where dimensional conformance is documented.

Key Features

• Nominal diameter of 3.47 mm with a tight tolerance of 0.005 mm for accurate go-inspection
• Tool steel construction for hardness and wear resistance in repeated gaging cycles
• 10 microfinish surface for consistent, low-friction contact with inspected bores
• Meets ASME B89.1 dimensional gaging standards
• Includes Certificate of Accuracy with NIST traceability for calibration documentation
• Suitable for setting micrometers, verniers, and other measuring instruments

Compatibility

Designed for go-inspection of holes at 3.47 mm nominal diameter and for use as a reference standard with micrometers, verniers, and other measuring devices requiring a traceable plug gage.

Installation Notes

Plug gages are handled and used by quality technicians and machinists; no power source or mechanical installation is required. Store the gage in its protective case when not in use to prevent surface damage and contamination. Clean the gage and the bore being inspected before use to avoid false readings caused by chips or debris. Follow your facility calibration schedule and ASME B89.1 handling guidelines to maintain traceability.