{"product_id":"spi-vrs3500-0-03-electronic-drop-indicator-0-25-in","title":"Spi VRS3500-0-03 Electronic Drop Indicator 0.25 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SPI VRS3500-0-03 is an electronic drop indicator designed for high-precision dimensional measurement in machining, inspection, and metrology applications. It covers a measurement range of 0 to 0.25 inches (0 to 6.35 mm) with a resolution of 0.000050 inches (0.0010 mm) and matching accuracy of 0.000050 inches. The lug back mount allows secure attachment to indicator holders and magnetic bases. It runs on a 3-volt battery and delivers a digital readout, making it well-suited for surface plate work, fixture alignment, and part inspection tasks where analog indicators fall short.\u003c\/p\u003e\u003cp\u003eThis indicator is used in precision measurement environments including machine shops, quality control departments, and tool rooms. It is appropriate for both production floor and inspection bench use. The compact form factor and lug back configuration make it a practical choice for technicians performing runout checks, flatness verification, and comparative gauging on machined components. Metrology technicians, machinists, and quality inspectors are the primary users of this instrument.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMeasurement range of 0 to 0.25 inches (0 to 6.35 mm)\u003c\/li\u003e\n\u003cli\u003eResolution and accuracy of 0.000050 inches (0.0010 mm)\u003c\/li\u003e\n\u003cli\u003eLug back mounting for use with standard indicator holders and arms\u003c\/li\u003e\n\u003cli\u003eStem diameter of 0.38 inches for compatibility with common collet-style holders\u003c\/li\u003e\n\u003cli\u003e3-volt battery power with electronic digital display\u003c\/li\u003e\n\u003cli\u003eMinimum measurement starts at 0.0000 inches for full-range use from zero\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a drop-style electronic indicator for use with standard lug back indicator holders, magnetic base arms, and collet-style mounting fixtures common in machine shop and inspection environments.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eMount the indicator using the lug back attachment point on a rigid indicator holder or magnetic base arm before zeroing the instrument. Ensure the stem is perpendicular to the measurement surface to avoid cosine error. Handle the contact point and stem with care to avoid damage to the precision measuring surfaces. Battery replacement should be performed with a compatible 3-volt cell per the manufacturer service instructions.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement Range\u003c\/strong\u003e: 0 to 0.25 inches (0 to 6.35 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Measurement\u003c\/strong\u003e: 0.0000 inches (0.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Measurement\u003c\/strong\u003e: 0.2500 inches (6.35 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResolution\u003c\/strong\u003e: 0.000050 inches (0.0010 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuracy\u003c\/strong\u003e: 0.000050 inches (0.0010 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStem Diameter\u003c\/strong\u003e: 0.38 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack Type\u003c\/strong\u003e: Lug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Size\u003c\/strong\u003e: 3 volts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 7 inches L x 5 inches W x 3 inches H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\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: VRS3500-0-03\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":68054076293426,"sku":"VRS3500-0-03","price":525.13,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1746f05e158ba29b6e2c1ea34c4ac8b3_135b9248-910c-4779-abb2-bd23f23de312.jpg?v=1792998592","url":"https:\/\/voomisupply.com\/products\/spi-vrs3500-0-03-electronic-drop-indicator-0-25-in","provider":"Voomi Supply","version":"1.0","type":"link"}