{"product_id":"vintage-optometrist-trial-lenses-lot-of-3-hinged-tab-prism-glass-metal-rim","title":"Vintage Optometrist Trial Lenses Lot of 3 Hinged Tab Prism Glass Metal Rim","description":"\u003cp\u003eBefore modern phoropters, optometrists and opticians worked out a prescription by dropping trial lenses into a test frame, one after another, until the patient could read the chart. Each of these hinged-tab lenses is a small piece of that history, taken from a larger fitted trial lens case. Collectors of vintage optical and medical items enjoy them, and they look great in a shadow box, on a shelf, or in a steampunk or craft project.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThis lot has three loose glass lenses in silver-tone metal rims, each with a hinged finger tab.\u003c\/li\u003e\n\u003cli\u003eThe tabs are stamped.75 (slotted tab),.5 (slotted tab), and 6 with the triangle symbol used for prism diopters.\u003c\/li\u003e\n\u003cli\u003eThe lenses come loose, without a case.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e Used - Good. Light scratches on the tabs and a faint orange discoloration at the hinge of the.5 lens; no chips or cracks seen. See photos.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eThe photos are part of the description, and your lenses will be packed with care.\u003c\/em\u003e\u003c\/p\u003e","brand":"Bigfoot Trading Co","offers":[{"title":"Default Title","offer_id":51161618907393,"sku":"EI-94786-99c13599","price":12.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/4571\/4945\/files\/mwgo5gs0-1.jpg?v=1794676889","url":"https:\/\/bigfoottradingco.com\/products\/vintage-optometrist-trial-lenses-lot-of-3-hinged-tab-prism-glass-metal-rim","provider":"Bigfoot Trading Co","version":"1.0","type":"link"}