{"product_id":"single-lens-watchmakers-loupe-7x","title":"Single Lens Watchmakers Loupe 7X","description":"\u003cp\u003eA reliable, pocket-size loupe built for watchmakers and bench jewelers who need hands-free magnification at a comfortable working distance. The 7X Single Lens Watchmakers Loupe features a single ground and polished lens that delivers distortion-free clarity, set in a lightweight black plastic frame. The contoured shape of the eyepiece is designed to rest securely in the eye socket, freeing both hands for detailed work.\u003c\/p\u003e\u003cp\u003eWith a 22 mm lens diameter and a 33 mm eyepiece opening, this loupe provides a practical balance between magnification power and field of view. At 7X, the focal length is approximately 1-1\/2\", bringing your work into sharp focus at a close but manageable distance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eUnderstanding single lens magnification:\u003c\/strong\u003e The higher the magnification, the closer the focal length and the smaller the field of view. As magnification increases, you work closer to your subject and see a smaller area in focus. A 10X loupe offers the highest magnification with the closest focal length and smallest field of view. A 3X loupe offers the lowest magnification with the greatest working distance and largest field of view.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e7X magnification with approximately 1-1\/2\" focal length\u003c\/li\u003e\n\u003cli\u003eSingle ground and polished lens for distortion-free viewing\u003c\/li\u003e\n\u003cli\u003e22 mm lens diameter\u003c\/li\u003e\n\u003cli\u003e33 mm eyepiece opening diameter\u003c\/li\u003e\n\u003cli\u003eContoured shape rests in the eye socket for hands-free use\u003c\/li\u003e\n\u003cli\u003eLightweight black plastic frame\u003c\/li\u003e\n\u003cli\u003ePocket-size and portable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMagnification\u003c\/th\u003e\n\u003ctd\u003e7X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd\u003e1-1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLens Diameter\u003c\/th\u003e\n\u003ctd\u003e22 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEyepiece Opening Diameter\u003c\/th\u003e\n\u003ctd\u003e33 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLens Type\u003c\/th\u003e\n\u003ctd\u003eSingle ground and polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrame Material\u003c\/th\u003e\n\u003ctd\u003eLightweight black plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOrigin\u003c\/th\u003e\n\u003ctd\u003eIndia\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43584417071318,"sku":"129.620","price":2.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/single-lens-watchmakers-loupe-7x-otto-frei-1.jpg?v=1719956205","url":"https:\/\/www.ottofrei.com\/ja\/products\/single-lens-watchmakers-loupe-7x","provider":"Otto Frei","version":"1.0","type":"link"}