{"product_id":"bergeon-5235-pn-black-delrin-ring-stick","title":"Bergeon 5235-PN Black Delrin High Precision Swiss Ring Stick","description":"\u003cp\u003eThe Bergeon 5235-PN is widely regarded as one of the most precise ring sticks available to professional jewelers. Crafted from black Delrin, this high-precision measuring tool will not scratch metal rings during sizing — a critical advantage when working with finished pieces. Made in Switzerland to Bergeon's exacting standards, it offers dual-sided graduation systems to accommodate both USA and French ring sizing conventions in a single instrument.\u003c\/p\u003e\u003cp\u003eThe stick measures 250 mm (9-7\/8\") in total length including the handle. One side displays USA sizes 1–15 alongside diameter measurements ranging from 13.0 mm to 24.2 mm. The reverse side carries French sizes 1–36 with corresponding circumference markings from 41 mm to 76 mm — making this tool equally at home in international workshops.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBlack Delrin construction will not scratch metal rings\u003c\/li\u003e\n\u003cli\u003eDual-sided graduation system: USA and French sizing on a single stick\u003c\/li\u003e\n\u003cli\u003eUSA sizes 1–15 with diameter in mm on one side\u003c\/li\u003e\n\u003cli\u003eFrench sizes 1–36 with circumference in mm on the reverse\u003c\/li\u003e\n\u003cli\u003eTotal length: 250 mm (9-7\/8\") including handle\u003c\/li\u003e\n\u003cli\u003eHigh-precision manufacturing for accurate, repeatable measurements\u003c\/li\u003e\n\u003cli\u003eMade in Switzerland by Bergeon\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eBlack Delrin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal Length\u003c\/th\u003e\n\u003ctd\u003e250 mm (9-7\/8\") including handle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUSA Sizes\u003c\/th\u003e\n\u003ctd\u003e1–15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDiameter Range\u003c\/th\u003e\n\u003ctd\u003e13.0 mm–24.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrench Sizes\u003c\/th\u003e\n\u003ctd\u003e1–36\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCircumference Range\u003c\/th\u003e\n\u003ctd\u003e41 mm–76 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eSwitzerland\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBergeon Reference\u003c\/th\u003e\n\u003ctd\u003e5235-PN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eAlso available in White Delrin (Bergeon 5235-PB) and Aluminum (Bergeon 5235). Matching ring finger gauges from Bergeon are also available: Bergeon 5236C, Bergeon 4286, and Bergeon 1311-A.\u003c\/p\u003e","brand":"Bergeon","offers":[{"title":"Default Title","offer_id":43581100589270,"sku":"135.279D","price":119.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/bergeon-5235-pn-black-delrin-high-precision-swiss-ring-stick-otto-frei-1.jpg?v=1719957741","url":"https:\/\/www.ottofrei.com\/products\/bergeon-5235-pn-black-delrin-ring-stick","provider":"Otto Frei","version":"1.0","type":"link"}