{"product_id":"spi-cms160725111-dial-drop-indicator-0-25-in-range","title":"Spi CMS160725111 Dial Drop Indicator 0.25 in Range","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI CMS160725111 is a dial drop indicator designed for precision dimensional measurement in machining, metrology, and quality-control applications. It provides a 0.25 inch total measurement range with a 0-25-0 bidirectional dial reading and a fine graduation of 0.0005 inches per division, giving technicians the resolution needed to detect minute surface variations, runout, or part deviation. The 2.2 inch white dial face promotes easy reading under shop conditions. Accuracy is rated at 0.0015 inches, and the indicator ships with a NIST traceability certification confirming it meets US Federal Specifications and AGD Group 2 standards. Machinists, quality inspectors, and tool-and-die technicians are the primary installers and users of this instrument.\u003c\/p\u003e\n\u003cp\u003eThis indicator is suited for use on surface plates, magnetic bases, and indicator holders in both production and inspection environments. Typical applications include checking shaft runout, verifying flatness, indicating parts into a chuck or vise, and inspecting machined surfaces against print tolerances. The 3\/8 inch stem diameter fits standard AGD-compatible holders and arms. The flat back allows flush mounting against indicator stands. The built-in revolution counter simplifies tracking of multi-revolution measurements within the 0.25 inch range, reducing read errors during repetitive inspection cycles.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0.25 inch total range with 0.0005 inch graduation for high-resolution measurement\u003c\/li\u003e\n  \u003cli\u003e0-25-0 bidirectional dial reading supports both positive and negative deviation checks\u003c\/li\u003e\n  \u003cli\u003eRevolution counter tracks travel across the full 0.25 inch range at 0.05 inches per revolution\u003c\/li\u003e\n  \u003cli\u003e2.2 inch white dial face with counter pointer for easy, unambiguous reading\u003c\/li\u003e\n  \u003cli\u003e3\/8 inch stem diameter with flat back for universal positioning and standard holder compatibility\u003c\/li\u003e\n  \u003cli\u003eIncludes NIST traceability certification meeting US Federal Specifications and AGD Group 2 requirements\u003c\/li\u003e\n  \u003cli\u003e1.50 N measuring force minimizes deflection on delicate or finished surfaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with standard AGD Group 2 indicator holders, magnetic bases, and universal positioning arms accepting a 3\/8 inch stem diameter. Thread size is 4-48 and M2.5 for contact point interchange.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eDial drop indicators are installed and used by machinists, metrologists, and quality technicians — no power source is required. Secure the 3\/8 inch stem firmly in the holder or arm clamp before zeroing the dial to avoid measurement drift. Handle the indicator spindle with care and avoid dropping the unit, as internal gear mechanisms are precision-ground and sensitive to impact. Zero the dial at the reference surface before taking comparative measurements, and confirm the contact point thread size matches replacement stylus contacts before swapping tips.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasurement Range\u003c\/strong\u003e: 0 to 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDial Reading\u003c\/strong\u003e: 0-25-0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGraduation\u003c\/strong\u003e: 0.0005 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccuracy\u003c\/strong\u003e: 0.0015 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRange Per Revolution\u003c\/strong\u003e: 0.05 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDial Diameter\u003c\/strong\u003e: 2.2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStem Diameter\u003c\/strong\u003e: 3\/8 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasuring Force\u003c\/strong\u003e: 1.50 N\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBack Type\u003c\/strong\u003e: Flat\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\u003eThread Size\u003c\/strong\u003e: 4-48 and M2.5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAGD Group\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTraceability Certification\u003c\/strong\u003e: NIST\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: NIST Certified, US Federal Specifications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 5.52 x 3.35 x 2.37 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.49 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 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: SPI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: CMS160725111\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51694695383346,"sku":"CMS160725111","price":79.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/488572cdd3dfc256f1ecc3a516f7a15d.jpg?v=1788327346","url":"https:\/\/voomisupply.com\/products\/spi-cms160725111-dial-drop-indicator-0-25-in-range","provider":"Voomi Supply","version":"1.0","type":"link"}