{"product_id":"spi-vrs2820-0-03-electronic-drop-indicator-0-4-in","title":"Spi VRS2820-0-03 Electronic Drop Indicator 0-4 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI VRS2820-0-03 is an electronic drop indicator designed for high-precision linear measurement in metrology, machining, and inspection applications. It covers a measurement range of 0 to 4 inches with a resolution and accuracy of 0.0001 inches (0.002 mm), making it suitable for demanding tolerance verification work. The unit features an LCD display and a lug-style back mount for secure fixture attachment. Power comes from two included CR2450 batteries. This instrument is typically handled by machinists, quality control technicians, and tool-and-die professionals.\u003c\/p\u003e\n\u003cp\u003eThe VRS2820-0-03 fits into surface plate inspection setups, transfer comparator stands, and fixture-mounted measurement rigs where a drop indicator format is required. The lug back allows attachment to standard dovetail and post-style holders commonly found in inspection departments and machine shops. The 0.38-inch stem diameter is compatible with conventional indicator holders and magnetic base clamps used in production and quality environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0 to 4 inch measurement range with 0.0001 inch resolution\u003c\/li\u003e\n  \u003cli\u003eLCD digital display for clear, direct reading\u003c\/li\u003e\n  \u003cli\u003eAccuracy of 0.0001 inches (0.002 mm)\u003c\/li\u003e\n  \u003cli\u003eLug back mount for secure attachment to standard holders\u003c\/li\u003e\n  \u003cli\u003e0.38-inch stem diameter fits conventional indicator clamps\u003c\/li\u003e\n  \u003cli\u003eIncludes two CR2450 batteries — ready to use out of the box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with standard dovetail and lug-back indicator holders; the 0.38-inch stem diameter is compatible with conventional magnetic base and post-style clamp holders used in inspection and machining setups.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eMount the indicator securely in a lug-back holder before use; verify the clamp is fully tightened to prevent movement during measurement. Zero the indicator against a known reference surface before taking readings. Handle the instrument carefully to avoid shock or drop damage, which can affect calibration. Battery replacement requires a CR2450 coin cell — power down the unit before servicing the battery compartment.\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 4 inches (0 to 101.60 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResolution\u003c\/strong\u003e: 0.0001 inches (0.002 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccuracy\u003c\/strong\u003e: 0.0001 inches (0.002 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDisplay Type\u003c\/strong\u003e: LCD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBack Type\u003c\/strong\u003e: Lug\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStem Diameter\u003c\/strong\u003e: 0.38 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Source\u003c\/strong\u003e: Battery\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBattery Size\u003c\/strong\u003e: CR2450\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Batteries\u003c\/strong\u003e: 2 (included)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 17 inches x 4.5 inches x 3.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2 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: SPI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: VRS2820-0-03\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51710834278706,"sku":"VRS2820-0-03","price":1431.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4642b5dece821b4dfe2e1bd307c3a236.jpg?v=1788471159","url":"https:\/\/voomisupply.com\/products\/spi-vrs2820-0-03-electronic-drop-indicator-0-4-in","provider":"Voomi Supply","version":"1.0","type":"link"}