Vermont Gage 111232100 Class Zz Minus Plug Pin Gage 0.3210 in

Product Description

The VERMONT GAGE 111232100 is a Class ZZ minus plug pin gage machined from steel and used to verify that a bored or reamed hole does not exceed its minimum acceptable diameter. At 0.3210 inches in diameter with a tolerance of 0.0002 inches, this gage provides reliable NoGo inspection performance in precision measurement workflows. The overall length of 2 inches keeps it manageable for bench and in-process checks. A 10 microfinish surface treatment ensures consistent contact and repeatable readings. Each unit ships with a Certificate of Accuracy traceable to NIST standards, supporting documentation requirements in quality-controlled environments.

This plug pin gage is suited for use in machine shops, tool rooms, and production inspection stations where hole diameter verification is part of routine quality control. It is also used to set and verify micrometers, verniers, and other measuring devices requiring a known reference diameter. Typical installers include machinists, metrology technicians, and quality control inspectors working to tight dimensional tolerances in metal fabrication, aerospace, automotive, and general manufacturing applications.

Key Features

• Class ZZ minus tolerance specification: 0.0002 inches for NoGo inspection use
• 0.3210 inch measurement diameter for precise hole verification
• 10 microfinish surface coating for consistent, repeatable contact
• Steel construction for durability in production and shop environments
• Includes Certificate of Accuracy with NIST traceability for quality documentation
• Compatible with micrometers, verniers, and other precision measuring instruments as a reference standard

Compatibility

Designed for NoGo inspection applications and for setting micrometers, verniers, and other precision measuring devices requiring a 0.3210 inch reference diameter.

Installation Notes

Plug pin gages are handled and used by metrology technicians and quality control personnel, not installed in the traditional sense. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the steel surface. Do not force the gage into a hole; apply only light, consistent hand pressure to avoid measurement error or damage to the gage surface. Store in its original case or a padded holder to protect the precision-ground finish.