{"product_id":"starrett-50997-micrometer-calibration-standard-15-in","title":"Starrett 50997 Micrometer Calibration Standard 15 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe STARRETT 50997 is a spherical end micrometer calibration standard designed to verify and maintain the accuracy of outside micrometers. At 15 inches in length and accurate to 0.0002 inches, this reference standard provides a reliable measurement baseline for metrology checks in tool rooms, calibration labs, and production environments. The part includes a heat insulating handle, which prevents thermal expansion errors caused by hand contact during use. Calibration standards of this type are used by quality technicians, metrologists, and precision machinists who need traceable, repeatable measurement verification.\u003c\/p\u003e\n\u003cp\u003eThis calibration standard is intended for use with outside micrometers requiring a 15-inch reference length. It is well suited for tool cribs, inspection departments, and job shops that maintain a calibrated instrument program. The heat insulating handle is a practical feature in any environment where temperature stability affects measurement accuracy. This part ships as a single unit and is appropriate for facilities that service or verify large-frame micrometers.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e15-inch reference length for large-range micrometer verification\u003c\/li\u003e\n  \u003cli\u003eAccuracy up to 0.0002 inches for precise calibration checks\u003c\/li\u003e\n  \u003cli\u003eCalibrated from factory — ready for immediate use as a reference standard\u003c\/li\u003e\n  \u003cli\u003eSpherical ends designed for consistent contact point engagement with micrometer anvils\u003c\/li\u003e\n  \u003cli\u003eIncludes heat insulating handle to minimize thermal expansion from hand contact\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with outside micrometers that require a 15-inch calibration reference standard. Intended as a verification tool for instruments within that measurement range.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eCalibration standards are handled by quality technicians or metrologists following established metrology procedures. Always hold the standard by the heat insulating handle to prevent body heat from affecting the reference length. Store the standard in its case when not in use to prevent damage to the contact surfaces. Periodic recertification against a traceable reference is recommended per your facility calibration program.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 15 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccuracy\u003c\/strong\u003e: 0.0002 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCalibrated\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes Heat Insulating Handle\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.813 pounds\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: STARRETT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 50997\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51539510231346,"sku":"50997","price":139.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1a105284cb95abf4546fe44aa35716a8.jpg?v=1785842183","url":"https:\/\/voomisupply.com\/products\/starrett-50997-micrometer-calibration-standard-15-in","provider":"Voomi Supply","version":"1.0","type":"link"}