{"product_id":"ring-finger-gauge-square-edge-usa-standard","title":"Ring Finger Gauge Square Edge 1-15 USA Standard","description":"\u003cp\u003eA reliable staple for any jeweler's bench, this USA Standard Ring Finger Gauge set provides accurate, at-a-glance sizing across the full range of common ring sizes. The set includes 29 individual rings spanning sizes 1 through 15, including half sizes, making it suitable for everyday customer fittings and professional sizing work.\u003c\/p\u003e\u003cp\u003eEach ring is clearly marked on one side with its USA standard size. Half sizes are indicated using a minus sign — for example, size 6½ is marked as \u003cem\u003e6-\u003c\/em\u003e. The reverse side of each ring displays the corresponding inside diameter in millimeters, so you can cross-reference USA sizes with metric measurements instantly. Size 6½, for instance, is marked \u003cem\u003e16.9\u003c\/em\u003e for a 16.9 mm inside diameter.\u003c\/p\u003e\u003cp\u003eThe square-edge profile of these gauges reflects standard ring construction, providing a more accurate fit reference compared to comfort-fit or rounded-edge alternatives. This is an essential bench tool for jewelers, bench technicians, and retail staff who need dependable sizing results in a durable, easy-to-use format.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e29 individual rings covering USA standard sizes 1 through 15\u003c\/li\u003e\n\u003cli\u003eIncludes all half sizes within the range\u003c\/li\u003e\n\u003cli\u003eHalf sizes indicated with a minus sign (e.g., 6½ = \u003cem\u003e6-\u003c\/em\u003e)\u003c\/li\u003e\n\u003cli\u003eReverse side of each ring stamped with inside diameter in millimeters\u003c\/li\u003e\n\u003cli\u003eSquare-edge profile for standard ring sizing reference\u003c\/li\u003e\n\u003cli\u003eDual-marked for quick USA-to-metric cross-reference\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Range\u003c\/th\u003e\n\u003ctd\u003e1–15 (USA Standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncrements\u003c\/th\u003e\n\u003ctd\u003eFull and half sizes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of Rings\u003c\/th\u003e\n\u003ctd\u003e29\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Marking System\u003c\/th\u003e\n\u003ctd\u003eUSA Standard; half sizes marked with minus sign\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSecondary Marking\u003c\/th\u003e\n\u003ctd\u003eInside diameter in millimeters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eSquare edge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e29 individual ring finger gauges, sizes 1–15 (USA Standard, full and half sizes)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43580923576534,"sku":"135.260","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/ring-finger-gauge-square-edge-1-15-usa-standard-otto-frei.jpg?v=1719957885","url":"https:\/\/www.ottofrei.com\/products\/ring-finger-gauge-square-edge-usa-standard","provider":"Otto Frei","version":"1.0","type":"link"}