{"product_id":"spi-14-654-8-dial-drop-indicator-0-25in-range-0-001in-grad","title":"Spi 14-654-8 Dial Drop Indicator 0.25in Range 0.001in Grad","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SPI 14-654-8 is a dial drop indicator designed for precise linear measurement in machining, inspection, and quality control applications. It offers a 0.25-inch total measurement range with a graduation of 0.001 inches, allowing technicians to detect minute surface variation or runout with confidence. The dial diameter is 1.625 inches with a white face and a 1-100 dial reading scale. The housing is rigid forged brass, and the stem diameter is 0.375 inches. A revolution counter is built in, tracking each 0.1-inch-per-revolution cycle for clear reading during multi-revolution measurements. This indicator includes a Certificate of Calibration traceable to NPL.\u003c\/p\u003e\u003cp\u003eThis indicator suits dimensional inspection tasks on machine tools, surface plates, and fixture setups found in manufacturing, toolroom, and metrology environments. It is typically used by machinists, quality control technicians, and toolmakers to verify part flatness, runout, alignment, and surface consistency. The flat and lug back mounting options allow it to be secured to a wide variety of indicator holders and magnetic base arms without additional adapters.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e0.25-inch measurement range with 0.001-inch graduation for fine-resolution readings\u003c\/li\u003e\n\u003cli\u003eRevolution counter tracks cumulative travel at 0.1 inches per revolution\u003c\/li\u003e\n\u003cli\u003eRigid forged brass housing for durability in shop environments\u003c\/li\u003e\n\u003cli\u003e1.625-inch white dial face with 1-100 reading scale for clear visibility\u003c\/li\u003e\n\u003cli\u003eFlat and lug back mounting options included for versatile setup\u003c\/li\u003e\n\u003cli\u003eTolerance pointers included for quick pass\/fail visual reference\u003c\/li\u003e\n\u003cli\u003eCertificate of Calibration traceable to NPL included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with standard AGD Group 2 indicator holders, magnetic bases, and surface plate stands that accept a 0.375-inch stem diameter. Meets AGD Group 2 and ASME B89.1.10M-2001 standards.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists or quality technicians using a compatible indicator holder or magnetic base. Secure the stem in the holder collet without overtightening to avoid restricting plunger travel. Ensure the workpiece and mounting surface are clean and free of burrs before zeroing the indicator. Power equipment should be off and workpieces should be stationary before taking readings.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement Range\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGraduation\u003c\/strong\u003e: 0.001 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDial Reading\u003c\/strong\u003e: 1-100\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDial Diameter\u003c\/strong\u003e: 1.625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRange Per Revolution\u003c\/strong\u003e: 0.1 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStem Diameter\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-48\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack Type\u003c\/strong\u003e: Flat and Lug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDial Color\u003c\/strong\u003e: White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRevolution Counter\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHousing Material\u003c\/strong\u003e: Rigid Forged Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: AGD Group 2, ASME B89.1.10M-2001, Certificate of Calibration Traceable to NPL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: English\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.52 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SPI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 14-654-8\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51714694644018,"sku":"14-654-8","price":115.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/924f2c082587bf5dbcc6271196da71ee.jpg?v=1788505034","url":"https:\/\/voomisupply.com\/products\/spi-14-654-8-dial-drop-indicator-0-25in-range-0-001in-grad","provider":"Voomi Supply","version":"1.0","type":"link"}