Vermont Gage 112301650 Class Zz Plus Plug Gage 1.65 Mm

Product Description

The VERMONT GAGE 112301650 is a Class ZZ Plus plug gage designed for precise dimensional inspection of small bores and holes. Machined from tool steel and finished to a 10 microfinish surface, this gage delivers tight tolerance verification at 0.005 mm (0.00508 mm nominal). The 1.65 mm diameter pin measures 2.0000 inches in overall length. Each unit ships with a Certificate of Accuracy traceable to NIST, confirming conformance to ASME B89.1 standards. Metrology technicians, quality control inspectors, and tool-room machinists rely on plug gages like this for fast, repeatable go/no-go or precision measurement tasks.

This plug gage is suited for go inspection applications in manufacturing and machine shop environments. It is also used as a reference standard when setting micrometers, verniers, and other precision measuring devices. The 1.65 mm diameter makes it appropriate for inspecting small-diameter bores typical in precision machined components, watch parts, medical device components, and fine-tolerance assemblies. Its compact size and rigid tool steel construction hold calibration well in production and lab settings alike.

Key Features

• Class ZZ Plus tolerance grade at 0.005 mm for high-accuracy go inspection
• Tool steel construction for dimensional stability and wear resistance
• 10 microfinish surface for consistent, repeatable gage contact
• NIST-traceable Certificate of Accuracy included with each unit
• Conforms to ASME B89.1 dimensional gage standards
• Suitable for setting micrometers, verniers, and other measuring instruments

Compatibility

Designed for go inspection of 1.65 mm diameter bores and as a reference standard for setting micrometers, verniers, and similar precision measuring devices in tool-room and quality-control applications.

Installation Notes

Plug gages are handled and used by metrology technicians and quality inspectors rather than installed in a mechanical system. Keep the gage clean and lightly oiled when stored to prevent corrosion on the tool steel surface. Do not force the pin into a bore; excessive insertion force can damage the gage or the workpiece and will introduce measurement error. Store in the original case or a padded gage stand away from temperature extremes to maintain calibration integrity.