Vermont Gage 111318450 Class Zz Plus Plug Gage 0.1845 in

Product Description

The VERMONT GAGE 111318450 is a Class ZZ Plus plug gage machined from tool steel and used to perform go-type dimensional inspection on bored or drilled holes. The gage measures a nominal diameter of 0.1845 inches with a tolerance of 0.0002 inches and carries a 10 microfinish surface finish on the gaging member. A Certificate of Accuracy with NIST traceability ships with each unit, satisfying quality-system documentation requirements. This type of gage is a staple in machine shops, manufacturing facilities, and metrology labs where hole-diameter conformance must be verified quickly and reliably at the point of inspection.

The 111318450 is suited for go-type inspection of holes at the 0.1845 inch nominal diameter. Typical applications include verifying drilled, reamed, or punched holes in production machining environments and setting or checking go/no-go inspection routines. The gage also serves as a reference standard when calibrating or verifying set micrometers, verniers, and other measuring devices, as noted in the application data. Overall length is 2.0 inches, making it compatible with standard gage handle systems used in bench or in-process inspection setups.

Key Features

• Class ZZ Plus tolerance classification per ASME B89.1 for go-type plug gaging
• 0.1845 inch nominal diameter with 0.0002 inch tolerance
• 10 microfinish surface on gaging member for accurate, repeatable contact
• Tool steel construction for hardness and wear resistance
• Certificate of Accuracy with NIST traceability included for quality-system compliance
• 2.0 inch overall length compatible with standard gage handle assemblies

Compatibility

Designed for go-type hole inspection and for use with set micrometers, verniers, and other measuring devices requiring a traceable reference standard at the 0.1845 inch diameter.

Installation Notes

Plug gages are installed and used by machinists, quality technicians, and metrologists - no special tooling is required beyond a compatible gage handle. Before use, clean the gaging member and the workpiece hole with a lint-free cloth to remove chips, coolant, and debris that could affect the reading. Do not force the gage member into an undersized hole, as this damages the precision-ground surface. Store the gage in its protective case away from heat sources and corrosive environments to maintain calibration integrity.