Vermont Gage 111115300 Class Zz Plus Plug Gage 0.153 in

Product Description

The VERMONT GAGE 111115300 is a Class ZZ Plus plug gage designed for precision dimensional inspection of holes and bores at 0.153 inches diameter. Manufactured from tool steel with a 10 microfinish surface, it delivers a tolerance of 0.0002 inches, meeting ASME B89.1 standards for gage accuracy. This type of plug gage is used in go inspection applications to verify that a hole falls within its specified lower tolerance limit. Each unit ships with a Certificate of Accuracy with NIST traceability, confirming calibration to a national standard. Machinists, quality technicians, and inspection personnel rely on this gage for fast, reliable pass-fail hole verification.

This plug gage is suited for use in precision manufacturing and quality control environments where tight hole tolerances must be verified quickly and repeatably. It is compatible with standard go inspection protocols and can also be used to set and verify micrometers, verniers, and other measuring devices to a known reference diameter. The 0.153 inches diameter range makes it appropriate for small-bore inspection tasks common in aerospace, automotive, medical device, and general machining applications. Overall length of 2.0 inches provides comfortable handling for bench and in-process inspection work.

Key Features

• Class ZZ Plus accuracy with 0.0002 inches tolerance per ASME B89.1
• Tool steel construction for durability and wear resistance in high-cycle inspection use
• 10 microfinish surface for consistent, low-friction gage entry
• Certificate of Accuracy included with full NIST traceability
• Suitable for go inspection and for setting micrometers, verniers, and other measuring devices
• Compact 2.0 inches overall length for easy handling at the bench or on the floor

Compatibility

Designed for go inspection of holes and bores at 0.153 inches diameter, and for use in setting micrometers, verniers, and other measuring devices requiring a calibrated reference standard.

Installation Notes

Plug gages are handled and used by quality technicians and machinists; no installation in the traditional sense is required. Keep the gage clean and lightly oiled when not in use to prevent corrosion and maintain surface finish integrity. Never force a plug gage into a bore — if it does not enter under light hand pressure in a go application, the hole is undersize. Store in the provided case or a protected location away from temperature extremes to preserve calibration.