Vermont Gage 111318750 Class Zz Plus Plug Gage 0.1875 in

Product Description

The VERMONT GAGE 111318750 is a Class ZZ Plus plug gage designed for precise go inspection of bored holes, drilled passages, and machined features at a nominal diameter of 0.1875 inches. Manufactured from tool steel and finished to a 10 microfinish surface quality, this gage holds a tolerance of 0.0002 inches, meeting the requirements of ASME B89.1. Each unit ships with a Certificate of Accuracy that carries full NIST traceability, making it suitable for use in calibrated inspection environments. Machinists, quality technicians, and tool-room personnel use Class ZZ Plus gages as a cost-effective go-inspection solution and as reference standards for setting micrometers, verniers, and other measuring devices.

This plug gage is appropriate for production and incoming inspection workflows in machine shops, fabrication facilities, and quality labs. At 0.1875 inches diameter and 2.0 inches overall length, the 111318750 fits standard gage-handle holders and is well suited for checking small-diameter features in both ferrous and non-ferrous workpieces. Its Class ZZ Plus classification places it within the tolerance band defined by ASME B89.1 for working gages used in general manufacturing inspection. The included NIST-traceable certificate supports ISO 9001 and AS9100 documentation requirements without additional calibration steps at incoming.

Key Features

• 0.1875 inches nominal diameter with a 0.0002 inches Class ZZ Plus tolerance per ASME B89.1
• Tool steel construction for hardness and wear resistance in repeated go inspection use
• 10 microfinish surface for consistent, low-friction contact with the gauged feature
• 2.0 inches overall length fits standard gage handles and pin-gage sets
• Certificate of Accuracy with NIST traceability included for documentation and audit compliance
• Suitable for setting micrometers, verniers, and other comparative measuring instruments

Compatibility

Designed for go inspection of machined holes and bores at 0.1875 inches nominal diameter, and for use as a setting reference with micrometers, verniers, and other measuring devices. Fits standard pin-gage handle holders sized for this diameter range.

Installation Notes

Plug gages are used by quality technicians and machinists and require no permanent installation. Before use, clean both the gage and the gauged feature with a lint-free cloth to remove chips, oil, and debris that could affect readings. Never force a plug gage into an undersized feature; hand pressure only prevents damage to both the gage and the part. Store the gage in its protective case away from heat sources to maintain dimensional stability and protect the calibrated surface finish.