{"product_id":"mitutoyo-optical-parallels-series-157","title":"Mitutoyo Optical Parallels, Series 157","description":"\u003ch6\u003e\n\u003cimg height=\"66\" width=\"234\" alt=\"\" src=\"\/\/cdn.shopify.com\/s\/files\/1\/1543\/2323\/files\/Mitutoyo_logo_large.jpg?v=1507786196\"\u003e Precision is our Profession\u003c\/h6\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eMitutoyo Optical Parallels, Series 157\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned to inspect parallelism and flatness of measuring faces of micrometers.\u003c\/li\u003e\n\u003cli\u003eEach set consists of 4 thicknesses.\u003c\/li\u003e\n\u003cli\u003eSupplied in fitted wooden case.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Data\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFlatness: .000004” \/ 0.1μm\u003cbr\u003eParallelism: .000008” \/ 0.2μm\u003cbr\u003eDiameter: 1.18” \/ 30mm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eParallelism check between measuring faces by means of interference fringe produced \u003c\/strong\u003e\u003cstrong\u003eby an optical parallel.\u003c\/strong\u003e\u003cbr\u003eThe parallelism between the measuring faces can be determined as follows--place the optical parallel to the anvil and observe the number of interference fringes produced on the spindle side under the measuring force of the\u003cbr\u003emicrometers. The parallelism is about 1μm (0.32μm x 3 = 0.96μm).\u003cbr\u003eFringe on the anvil side must not be more than one.\u003c\/p\u003e\n\u003ctable xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" cellspacing=\"0\" cellpadding=\"0\" dir=\"ltr\" border=\"1\" data-mce-fragment=\"1\"\u003e\n\u003ctbody data-mce-fragment=\"1\"\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd rowspan=\"1\" colspan=\"5\" data-sheets-value='{\"1\":2,\"2\":\"Optical Parallels, Series 157\"}' data-mce-fragment=\"1\"\u003eOptical Parallels, Series 157\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"Code\"}' data-mce-fragment=\"1\"\u003eCode\u003c\/td\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"Model\"}' data-mce-fragment=\"1\"\u003eModel\u003c\/td\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"Micrometers to be checked\"}' data-mce-fragment=\"1\"\u003eMicrometers to be checked\u003c\/td\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"Thickness of Parallel\"}' data-mce-fragment=\"1\"\u003eThickness of Parallel\u003c\/td\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"Price\"}' data-sheets-numberformat='[null,2,\"#,##0.00\",1]' data-mce-fragment=\"1\"\u003ePrice\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd rowspan=\"1\" colspan=\"5\" data-sheets-value='{\"1\":2,\"2\":\"Metric\"}' data-mce-fragment=\"1\"\u003eMetric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"157-903 (4pcs\/set)\"}' data-mce-fragment=\"1\"\u003e157-903 (4pcs\/set)\u003c\/td\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"OP-25\"}' data-mce-fragment=\"1\"\u003eOP-25\u003c\/td\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"0-25mm\"}' data-mce-fragment=\"1\"\u003e0-25mm\u003c\/td\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"12, 12.25, 12.37mm\"}' data-mce-fragment=\"1\"\u003e12, 12.25, 12.37mm\u003c\/td\u003e\n\u003ctd data-sheets-value='{\"1\":3,\"3\":22700}' data-sheets-numberformat='[null,2,\"#,##0.00\",1]' data-mce-fragment=\"1\"\u003e22,700.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"157-904 (4pcs\/set)\"}' data-mce-fragment=\"1\"\u003e157-904 (4pcs\/set)\u003c\/td\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"OP-50\"}' data-mce-fragment=\"1\"\u003eOP-50\u003c\/td\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"25-50mm\"}' data-mce-fragment=\"1\"\u003e25-50mm\u003c\/td\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"25, 25.12, 25.25, 25.37mm\"}' data-mce-fragment=\"1\"\u003e25, 25.12, 25.25, 25.37mm\u003c\/td\u003e\n\u003ctd data-sheets-value='{\"1\":3,\"3\":59200}' data-sheets-numberformat='[null,2,\"#,##0.00\",1]' data-mce-fragment=\"1\"\u003e59,200.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd rowspan=\"1\" colspan=\"5\" 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