{"product_id":"precision-die-cast-ring-finger-gauge-1-15-29-sizers-usa-standard","title":"Precision Die Cast Ring Finger Gauge 1-15 USA Standard","description":"\u003cp\u003eThis precision die cast ring finger gauge set is an essential sizing tool for professional jewelers who demand accuracy at the bench. Constructed from lightweight die cast aluminum, the set covers \u003cstrong\u003eUSA sizes 1 through 15\u003c\/strong\u003e, including half sizes, for a total of \u003cstrong\u003e29 individual ring sizers\u003c\/strong\u003e. The reverse side of each sizer is marked with the corresponding diameter in millimeters, ranging from \u003cstrong\u003e12.45 mm to 28.83 mm\u003c\/strong\u003e, giving you an immediate metric reference without additional calculation.\u003c\/p\u003e\u003cp\u003eWhen verified with a high-quality digital gauge, the millimeter markings were found to be accurate to within one hundredth of a millimeter — a level of precision that is genuinely impressive for a die cast tool and makes this set a reliable standard for professional ring sizing work.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e29 individual ring sizers covering USA sizes 1–15 with half sizes\u003c\/li\u003e\n\u003cli\u003eReverse side marked with millimeter diameters from 12.45 mm to 28.83 mm\u003c\/li\u003e\n\u003cli\u003eVerified accuracy to one hundredth of a millimeter\u003c\/li\u003e\n\u003cli\u003eLightweight die cast aluminum construction\u003c\/li\u003e\n\u003cli\u003eDual-scale design for quick USA and metric reference\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\u003eDie cast aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Range\u003c\/th\u003e\n\u003ctd\u003eUSA sizes 1–15 (including half sizes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal Sizers\u003c\/th\u003e\n\u003ctd\u003e29\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDiameter Range\u003c\/th\u003e\n\u003ctd\u003e12.45 mm – 28.83 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Standard\u003c\/th\u003e\n\u003ctd\u003eUSA standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43583559074006,"sku":"135.263","price":11.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/precision-die-cast-ring-finger-gauge-1-15-usa-standard-otto-frei.jpg?v=1719956607","url":"https:\/\/www.ottofrei.com\/ja\/products\/precision-die-cast-ring-finger-gauge-1-15-29-sizers-usa-standard","provider":"Otto Frei","version":"1.0","type":"link"}