{"product_id":"ba116","title":"BA116","description":"\u003ch3 class=\"product-name\"\u003eRonchi 145 LPMM 2\" X 2\"\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe Ronchi Ruling pattern (also called a diffraction grating) consists of equally spaced alternating clear and opaque bars. The spatial frequency of the ruling is typically expressed in Line Pairs per MM or Line Pairs per Inch.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe pattern is printed in Chromium (OD \u0026gt; 3.0) on 1.5mm thick Soda Lime Glass and extends to the edge of the glass. The transmission tolerance for the 145 LPMM pattern is ±7.5%.\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0726\/7477\/1081\/files\/BA116_drawing.pdf?v=1766167210\"\u003eClick here to download drawing\u003c\/a\u003e\u003c\/p\u003e","brand":"Max Levy","offers":[{"title":"Default Title","offer_id":45075065733257,"sku":null,"price":306.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0726\/7477\/1081\/files\/BA116image.jpg?v=1766167240","url":"https:\/\/maxlevy.com\/products\/ba116","provider":"Max Levy","version":"1.0","type":"link"}