Vermont Gage 111151300 Class Zz Plus Plug Gage 0.513 in

Product Description

The VERMONT GAGE 111151300 is a Class ZZ Plus plug gage designed for precision dimensional inspection of machined bores and holes at 0.513 inches diameter. Built from tool steel and finished to a 10 microinch surface finish, it delivers the tight dimensional control required for go inspection work. The gage holds a tolerance of 0.0002 inches and ships with a Certificate of Accuracy traceable to NIST, confirming traceability for quality-system requirements. Machinists, quality technicians, and tool room personnel use this type of gage to verify that bored, reamed, or drilled features meet print dimensions before parts advance through production.

This plug gage is suited for go inspection applications in both production and inspection environments. It is also used to set and verify micrometers, verniers, and other measuring devices that require a known reference diameter. Typical users include machine shops, tool rooms, and quality departments working to ASME B89.1 dimensional standards. The 0.513-inch diameter and 2.0-inch overall length make it appropriate for shallow-to-moderate depth bore verification in a range of workpiece materials.

Key Features

• Class ZZ Plus tolerance class — 0.0002 inches — for go inspection of precision bores
• 10 microinch surface finish for consistent, repeatable gage contact
• Tool steel construction provides wear resistance in production inspection use
• Certificate of Accuracy included with full NIST traceability for quality-system compliance
• Conforms to ASME B89.1 dimensional gage standards
• Compact 2.0-inch overall length suitable for accessible bore inspection

Compatibility

Designed as an OEM-style go plug gage for inspecting bores and holes at 0.513 inches diameter, and for use as a setting reference with micrometers, verniers, and other precision measuring devices calibrated to ASME B89.1 standards.

Installation Notes

Plug gages are handled and used by quality technicians and machinists; no power tools or utility shutoffs are required for their use. Handle the gage with clean, dry hands or cotton gloves to prevent corrosion from skin oils, and store it in its protective case when not in use. Apply a light film of gage oil or rust preventative before storage to maintain the lapped surface finish. Calibration intervals should follow your shop quality plan and any applicable ISO or AS9100 requirements.