{"product_id":"vermont-gage-112121880-class-zz-plus-plug-gage-21-88mm","title":"Vermont Gage 112121880 Class Zz Plus Plug Gage 21.88mm","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VERMONT GAGE 112121880 is a Class ZZ Plus plug gage designed for go inspection of bored, drilled, and reamed holes with a nominal diameter of 21.88 mm. Manufactured from tool steel with a 10 micro-inch coating finish, this gage provides a tolerance of 0.005 mm (0.00508 mm actual), meeting the dimensional requirements of ASME B89.1. Each unit ships with a Certificate of Accuracy bearing NIST traceability, supporting documented quality-control workflows. Metrology technicians, tool-and-die shops, and precision machining operations use this gage to verify hole conformance during in-process and final inspection.\u003c\/p\u003e\n\u003cp\u003eThis plug gage is suited for go inspection applications where hole diameter must be confirmed within tight tolerances. It is used alongside set micrometers, verniers, and other calibrated measuring devices in both shop-floor and laboratory environments. The 2.0 inch overall length fits standard handle assemblies commonly found in inspection toolkits. Its Class ZZ Plus classification indicates it meets or exceeds standard Class ZZ tolerance limits, making it appropriate for general-purpose production inspection in manufacturing facilities.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e21.88 mm nominal diameter for go inspection of precision bored or reamed holes\u003c\/li\u003e\n  \u003cli\u003eClass ZZ Plus tolerance class with 0.005 mm tolerance per ASME B89.1\u003c\/li\u003e\n  \u003cli\u003eTool steel construction with 10 micro-inch coating finish for wear resistance\u003c\/li\u003e\n  \u003cli\u003eIncludes Certificate of Accuracy with NIST traceability for calibration records\u003c\/li\u003e\n  \u003cli\u003e2.0 inch overall length compatible with standard plug gage handles\u003c\/li\u003e\n  \u003cli\u003eCompatible with set micrometers, verniers, and other measuring devices\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with standard plug gage handle assemblies and suitable for go inspection applications with set micrometers, verniers, and other measuring devices as stated by the manufacturer.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePlug gages should be handled with clean, dry hands or lint-free gloves to prevent contamination and corrosion. Before use, ensure the gage and workpiece are at the same ambient temperature to minimize thermal expansion error. Store the gage in its protective case when not in use and do not force the gage through an undersize hole, as this will damage the gage surface and invalidate calibration.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 21.88 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance\u003c\/strong\u003e: 0.00508 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.0 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.33 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Tool Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: 10 Micro-inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGage Class\u003c\/strong\u003e: ZZ Plus\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Go Inspection; Set Micrometers; Verniers and Other Measuring Devices\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes\u003c\/strong\u003e: Certificate of Accuracy with NIST Traceability\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: ASME B89.1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: VERMONT GAGE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 112121880\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VERMONT GAGE","offers":[{"title":"Default Title","offer_id":51729155948850,"sku":"112121880","price":22.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1cf04934d75d3eb37d973f6ea4b25c4d_b127ad25-9fb5-40a7-9ff4-cde2a194a87c.jpg?v=1788701037","url":"https:\/\/voomisupply.com\/products\/vermont-gage-112121880-class-zz-plus-plug-gage-21-88mm","provider":"Voomi Supply","version":"1.0","type":"link"}