Vermont Gage 112309250 Class Zz Plus Plug Gage 9.25 Mm

Product Description

The VERMONT GAGE 112309250 is a Class ZZ Plus plug gage machined from tool steel and used to verify bore diameters with high repeatability. It is designed for go inspection applications, confirming that a hole or bore meets minimum size requirements before a part advances through the production process. The gage measures 9.25 mm in diameter with a tolerance of 0.00508 mm and a surface finish of 10 microinch, delivering the tight dimensional control required for precision metrology work. Machinists, quality technicians, and tool room professionals rely on this style of plug gage for fast, repeatable attribute inspection on the shop floor or in the metrology lab.

This plug gage is suited for use in manufacturing environments where bore diameter verification is part of an incoming, in-process, or final inspection routine. It is compatible with standard gage handle sets and can be used alongside set micrometers, vernier calipers, and other measuring devices to calibrate or verify measuring instruments. Typical applications include precision machined parts inspection in aerospace, automotive, hydraulic component, and general metalworking settings where ASME B89.1 dimensional standards are required.

Key Features

• Class ZZ Plus tolerance of 0.00508 mm for precise go inspection of 9.25 mm bores
• Tool steel construction provides hardness and wear resistance for repeated use
• 10 microinch surface finish reduces measurement error caused by surface irregularities
• Manufactured to ASME B89.1 standards for dimensional gaging
• Includes a Certificate of Accuracy with NIST traceability for calibration documentation
• Compatible with standard gage handles and usable for setting micrometers and vernier measuring devices

Compatibility

Designed for use with standard two-ended or single-ended plug gage handles sized for 9.25 mm diameter gage members. Suitable for go inspection of bores where ASME B89.1 Class ZZ Plus tolerances apply.

Installation Notes

Plug gages are installed and used by quality technicians, toolroom machinists, and metrologists - no special certifications are required for general shop use, though calibration lab work typically follows ISO 17025 or equivalent practices. Before use, clean the gage member and the bore being checked to remove chips, oil, and debris that would affect the reading. Never force a plug gage into an undersized bore; insertion should require only light hand pressure. Store gage members in their protective case away from moisture to prevent corrosion of the tool steel surface.