{"product_id":"starrett-53428-dial-drop-indicator-0-25-in-range-lug-back","title":"Starrett 53428 Dial Drop Indicator 0.25 in Range Lug Back","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe STARRETT 53428 is a dial drop indicator designed for precision dimensional measurement in machining, assembly, and inspection applications. It covers a measuring range of 0 to 0.25 inches with a graduation of 0.001 inches, allowing technicians to detect small variations in surface height, runout, or part alignment. The dial face reads 0-100 on a white, no-glare satin finish dial measuring 1-11\/16 inches in diameter. A revolution counter tracks cumulative travel across the 0.1-inch-per-revolution mechanism. The stainless steel stem measures 0.375 inches in diameter, and the jeweled bearing system supports repeatable, low-friction operation. An unbreakable crystal protects the dial face during shop use.\u003c\/p\u003e\n\u003cp\u003eThis drop indicator is suited for use on surface plates, comparator stands, magnetic base setups, and machine tool fixtures in precision metalworking, quality control, and general inspection environments. The lug back mounts directly to standard indicator holders and arms. A flat back is included for alternative mounting configurations. Machinists, tool and die makers, quality technicians, and metrology professionals typically deploy this indicator for workpiece setup, concentricity checks, and part-to-part comparison tasks.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0 to 0.25 inches measuring range with 0.001 inches graduation for precise readings\u003c\/li\u003e\n  \u003cli\u003eJeweled bearing mechanism for smooth, consistent spindle travel\u003c\/li\u003e\n  \u003cli\u003eRevolution counter tracks cumulative displacement beyond one dial revolution\u003c\/li\u003e\n  \u003cli\u003eNo-glare satin finish on white dial face reduces eye strain under shop lighting\u003c\/li\u003e\n  \u003cli\u003eStainless steel stem (0.375 inches diameter) resists corrosion and wear\u003c\/li\u003e\n  \u003cli\u003eUnbreakable crystal protects dial in demanding shop environments\u003c\/li\u003e\n  \u003cli\u003eIncludes both lug back and flat back for mounting flexibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with standard indicator holders, magnetic bases, and comparator stands that accept a lug back or flat back dial indicator with a 0.375-inch stem diameter. AGD Group 1 classification.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists, quality technicians, or metrology personnel using a standard indicator holder or magnetic base arm. Ensure the mounting arm is fully tightened and the indicator stem is oriented perpendicular to the measured surface for accurate readings. Do not exceed the rated measuring range, as overtravel can damage the internal mechanism. Handle the crystal and stem with care to preserve calibration integrity.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasuring Range\u003c\/strong\u003e: 0 to 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDial Graduation\u003c\/strong\u003e: 0.001 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDial Reading\u003c\/strong\u003e: 0-100\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\u003eDial Diameter\u003c\/strong\u003e: 1-11\/16 inches (42.86 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStem Diameter\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDial Color\u003c\/strong\u003e: White, no-glare satin finish\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBack Type\u003c\/strong\u003e: Lug back (flat back included)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBearing Type\u003c\/strong\u003e: Jeweled\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRevolution Counter\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCrystal\u003c\/strong\u003e: Unbreakable\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAGD Group\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: English (inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.438 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: 53428\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51544610570546,"sku":"53428","price":249.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/58bc8a599dfe3ed3bb9d41359c7d8316.jpg?v=1785931399","url":"https:\/\/voomisupply.com\/products\/starrett-53428-dial-drop-indicator-0-25-in-range-lug-back","provider":"Voomi Supply","version":"1.0","type":"link"}