{"product_id":"mitutoyo-4887a-19-dial-drop-indicator-3in-0-001in-grad","title":"Mitutoyo 4887A-19 Dial Drop Indicator 3in 0.001in Grad","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe MITUTOYO 4887A-19 is a dial drop indicator designed for precision dimensional measurement in metrology, machining, and quality control applications. It provides a 3-inch total measurement range with a 0.001-inch graduation, allowing technicians to detect and record small surface variations and runout with repeatable accuracy. The jeweled bearing construction reduces friction and wear, contributing to long-term measurement consistency. A built-in revolution counter tracks full spindle rotations across the 3-inch range, and the shockproof design adds durability in shop-floor environments. Licensed metrology technicians, machinists, and quality inspectors are the primary users of this instrument.\u003c\/p\u003e\n\u003cp\u003eThe 4887A-19 is suited for use in precision inspection setups, surface plate work, fixture verification, and machine tool alignment. The lug back mount allows secure attachment to magnetic bases, transfer stands, and indicator holders commonly used in both shop and lab settings. The 3-5\/8-inch white dial face with a 0-100 reading scale provides clear readability under typical shop lighting. This indicator conforms to ANSI\/AGD standards and falls within AGD Group 4, making it appropriate for applications requiring standardized gage interchangeability.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3-inch measurement range with 0.001-inch graduation for fine-resolution readings\u003c\/li\u003e\n  \u003cli\u003eJeweled bearing construction for reduced friction and extended service life\u003c\/li\u003e\n  \u003cli\u003eRevolution counter for tracking cumulative travel across the full 3-inch range\u003c\/li\u003e\n  \u003cli\u003eShockproof design for durability in production and shop-floor environments\u003c\/li\u003e\n  \u003cli\u003eLug back mount compatible with standard indicator holders and magnetic bases\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI\/AGD standards, AGD Group 4 classification\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an ANSI\/AGD Group 4 drop indicator compatible with standard lug back indicator holders, magnetic bases, and transfer stands used in precision measurement setups.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by machinists or metrology technicians using a compatible indicator holder and mounting arm. Ensure the lug back is fully seated and clamped before taking measurements. The spindle should move freely without side load to maintain accuracy. Handle the instrument carefully and avoid dropping, as impact damage can affect calibration even in shockproof models.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasurement Range\u003c\/strong\u003e: 3 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\u003eAccuracy\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: 3-5\/8 inches (92.08 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDial Color\u003c\/strong\u003e: White\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStem Diameter\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStem Length\u003c\/strong\u003e: 66.90 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 319.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBack Type\u003c\/strong\u003e: Lug\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBearing Type\u003c\/strong\u003e: Jeweled\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-48\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasuring Force\u003c\/strong\u003e: 3.00 N\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRevolution Counter\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI\/AGD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAGD Group\u003c\/strong\u003e: 4\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: 3 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: MITUTOYO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 4887A-19\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MITUTOYO","offers":[{"title":"Default Title","offer_id":51559265567026,"sku":"4887A-19","price":608.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/77d104d25868ddd208fbb8645f3782ff.jpg?v=1786430084","url":"https:\/\/voomisupply.com\/products\/mitutoyo-4887a-19-dial-drop-indicator-3in-0-001in-grad","provider":"Voomi Supply","version":"1.0","type":"link"}