Vermont Gage 911131300 Class Zz Plus Plug Gage 0.313 in

Product Description

The VERMONT GAGE 911131300 is a Class ZZ Plus plug gage designed for precise go inspection of internal bores and holes at a nominal diameter of 0.313 inches. Manufactured from tool steel with a black oxide finish, this gage provides a tolerance of 0.0002 inches, making it suitable for dimensional verification tasks that demand close accuracy. At an overall length of 2 inches and a weight of 0.1 pounds, it is a compact, hand-held inspection tool. Each unit ships with a Certificate of Accuracy traceable to NIST, supporting quality documentation requirements in production and inspection environments. Licensed metrology technicians, machinists, and quality control inspectors are the primary users.

This plug gage is used in manufacturing and metrology settings where internal diameters must be verified against tight tolerances. It is appropriate for setting and verifying micrometers, vernier calipers, and other measuring devices, as well as for go inspection on production parts. Typical applications include incoming inspection, in-process quality checks, and calibration support in machine shops, tool rooms, and quality labs handling precision components.

Key Features

• Class ZZ Plus tolerance of 0.0002 inches for precision go inspection
• 0.313 inch nominal diameter suits common bore inspection requirements
• Tool steel construction for durability and dimensional stability
• Black oxide finish resists corrosion and reduces light reflection during inspection
• Includes Certificate of Accuracy with NIST traceability for documentation compliance
• Meets ASME B89.1 standard for dimensional gages

Compatibility

Designed for use with standard gage handle systems and suitable for go inspection of internal bores nominally sized at 0.313 inches. Also used to set and verify micrometers, verniers, and other precision measuring devices requiring a traceable reference standard.

Installation Notes

Plug gages are handled and used by metrology technicians and quality control personnel. No power source is required. Store the gage in its protective case when not in use to prevent surface damage and dimensional distortion. Clean contact surfaces with a lint-free cloth before use, and avoid dropping or impacting the gage, as this can affect calibration. Periodic re-calibration against a NIST-traceable standard is recommended per your facility quality plan.