Vermont Gage 112301430 Class Zz Plus Plug Gage 1.43mm

Product Description

The VERMONT GAGE 112301430 is a Class ZZ Plus plug gage manufactured from tool steel and designed for precision bore and hole inspection. This gage checks whether a hole or bore meets minimum acceptable diameter requirements during go inspection operations. At 1.43 mm in diameter with a tolerance of 0.005 mm, it delivers the dimensional accuracy required for tight-tolerance inspection work. A 10 microfinish surface treatment on the gage pin reduces wear and ensures repeatable contact with the workpiece. It ships with a Certificate of Accuracy traceable to NIST, satisfying documentation requirements for ISO-registered shops and quality audit trails.

This plug gage is suited for use in machine shops, production floors, and quality control labs where small-diameter bore verification is part of routine inspection. It is used alongside set micrometers, verniers, and other measuring devices to confirm hole dimensions before assembly or final inspection. The 2.0-inch overall length provides adequate handling clearance for bench or in-process inspection setups. Typical users include quality technicians, machinists, and metrology professionals working with precision-machined components requiring sub-millimeter hole tolerances.

Key Features

• Class ZZ Plus tolerance classification for go inspection of 1.43 mm diameter bores
• Tool steel construction for durability and resistance to wear during repeated use
• 10 microfinish surface on the gage pin for consistent, accurate contact
• Tolerance of 0.005 mm meets ASME B89.1 standards
• Includes Certificate of Accuracy with NIST traceability for quality documentation
• Compatible with set micrometers, verniers, and general measuring device calibration workflows

Compatibility

Designed for go inspection use with set micrometers, verniers, and other measuring devices where 1.43 mm bore verification is required. Conforms to ASME B89.1 standards for plain plug gages.

Installation Notes

Plug gages are handled and used by quality technicians and metrology personnel — no installation in the mechanical sense applies. Store the gage in its protective case when not in use to prevent damage to the precision-ground pin surface. Clean the gage pin and bore being measured before use to avoid debris-induced false readings. Do not force the gage into an undersized hole, as this can damage the pin surface and invalidate calibration.