{"product_id":"tabletop-polariscope-110-120v-gem-testing","title":"Polariscope Tabletop-110V","description":"\u003cp\u003eThis tabletop polariscope is designed to quickly differentiate between singly refractive (isotropic) and doubly refractive (anisotropic) stones. By placing a stone between two polarizing filters and rotating the upper lens, you can observe characteristic light changes that reveal a stone’s optical behavior—an essential step in gemstone identification.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned to distinguish isotropic from anisotropic stones\u003c\/li\u003e\n\u003cli\u003eRotating top polarizing lens for observation of interference effects\u003c\/li\u003e\n\u003cli\u003eDiffused bottom lens for even illumination\u003c\/li\u003e\n\u003cli\u003eAdditional removable lens positioned above the bottom lens\u003c\/li\u003e\n\u003cli\u003eIntegrated illumination with rear on\/off switch\u003c\/li\u003e\n\u003cli\u003eTabletop design for stable gemological examination\u003c\/li\u003e\n\u003cli\u003eNo batteries required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003ctd\u003e110–120 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Source\u003c\/th\u003e\n\u003ctd\u003eAC Outlet (No Batteries Required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003ctd\u003eRotating Top Lens, Fixed Bottom Diffused Lens, Removable Auxiliary Lens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufactured In\u003c\/th\u003e\n\u003ctd\u003eChina\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003eThe included lenses function as polarizing elements and light diffusers; they do not provide magnification. For proper operation, connect to a compatible 110–120V outlet and ensure the stone is centered between the polarizing filters before rotating the top lens.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43583488229590,"sku":"161.160A","price":115.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/polariscope-tabletop-110v-otto-frei.jpg?v=1719956634","url":"https:\/\/www.ottofrei.com\/products\/tabletop-polariscope-110-120v-gem-testing","provider":"Otto Frei","version":"1.0","type":"link"}