Vermont Gage 112315610 Class Zz Plus Plug Gage 15.61mm

Product Description

The VERMONT GAGE 112315610 is a Class ZZ Plus plug gage machined from tool steel and used to verify bore diameters in precision inspection workflows. It measures 15.61 mm in diameter with a tolerance of 0.005 mm, making it suitable for go-type inspection of machined holes. The overall length is 2.0000 inches. Each unit ships with a Certificate of Accuracy traceable to NIST standards, meeting the requirements of ASME B89.1. Machinists, quality technicians, and metrologists rely on this gage to confirm that bored or reamed features fall within specified limits before parts advance through production or assembly.

This plug gage is intended for go inspection applications where a machined bore must accept the gage to confirm minimum acceptable size. It is also used to calibrate and verify micrometers, verniers, and other measuring devices requiring a traceable reference standard. Typical environments include machine shops, quality labs, and inspection stations in manufacturing facilities handling close-tolerance components. The 10 micro finish on the gage surface supports consistent, repeatable contact with the workpiece bore.

Key Features

• Class ZZ Plus tolerance class meets ASME B89.1 requirements for go plug gages
• 15.61 mm diameter with 0.005 mm tolerance for tight-tolerance bore inspection
• Tool steel construction provides hardness and wear resistance for production use
• 10 micro surface finish ensures consistent gage-to-bore contact
• Includes Certificate of Accuracy with NIST-traceable calibration documentation
• Compatible with micrometers, verniers, and other precision measuring devices as a reference standard

Compatibility

Designed for go inspection of machined bores at 15.61 mm nominal diameter, and for use as a reference standard with micrometers, verniers, and other precision measuring devices.

Installation Notes

Plug gages are handled and used by quality technicians and machinists trained in precision measurement practices. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the tool steel surface. Do not force the gage into a bore; if resistance is encountered during go inspection, the bore is undersize. Store in a protective case away from impact and temperature extremes to preserve calibration integrity.