{"product_id":"pro-grade-granite-comparator-base-150mm-by-100mm-b","title":"Pro Grade Granite Comparator Base 150mm By 100mm By 50mm With Digital Indicator For Precise Calibration And Flatness Testing Natural Granite Stand Built To Stay Rock Solid In Stock","description":"\u003cdiv\u003eGranite Comparator Base 150x100x50 mm with Digital Indicator\u003cbr\u003e\n✔️ Single unit granite base with 0.0027 mm flatness, DIN876-00 \u003cp\u003eThe granite comparator base is a precision measurement platform used in metrology labs, inspection rooms, and machine shops. Built from natural black granite, it delivers rock-solid stability and an ultra-flat reference surface for calibration and flatness testing of indicators, height gauges, and other precision instruments.\u003c\/p\u003e \u003cp\u003e✅ Ultra-high precision: Ground to DIN876-00, DIN876-0 standards for flatness\u003cbr\u003e✅ Material: natural black granite for high stiffness and low expansion\u003cbr\u003e✅ Size and flatness: 150x100x50 mm base; flatness 0.0027 mm\u003cbr\u003e✅ Non-magnetic and radiation-free for interference-free testing\u003c\/p\u003e \u003cp\u003e💡 What is a granite comparator base used for in precision metrology and calibration?\u003c\/p\u003e\n\u003cp\u003eIn short, this base provides a rock-solid reference plane for accurate calibration and flatness verification.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHandy for aligning dial indicators and height gauges\u003c\/li\u003e\n\u003cli\u003eSupports repeatable measurements across tools and fixtures\u003c\/li\u003e\n\u003cli\u003eNon-magnetic and stable over time for long-term accuracy\u003c\/li\u003e\n\u003cli\u003eIdeal for labs and machine shops needing precise fixturing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":48156513173739,"sku":"VXB0DWZQN71N","price":49.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/61u44lejIEL.jpg?v=1777379637","url":"https:\/\/vxb.com\/products\/pro-grade-granite-comparator-base-150mm-by-100mm-b","provider":"VXB Bearings","version":"1.0","type":"link"}