Swarovski ME 1.7x Magnification Extender 49230. Swarovski's 1.7x Magnification Extender amplifies the magnification available to the ATX/BTX/STX modular spotting scope system. Compatible with all configurations of ATX, BTX, and STX and 65mm, 85mm, and 95mm objective lenses, the Magnification Extender acts like a photographic Tele-Converter, mounting in between the objective and viewing modules. Magnification Extender Working Magnification Guide. ATX/STX with 65mm/85mm Objective: 42.5x-102x.ATX/STX with 95mm Objective: 51x-119x. BTX with 65mm/85mm Objective: 51x. BTX with 95mm Objective: 58x. This item may be regulated for export by the U. Department of State or US Department of Commerce. This item is in the category "Sporting Goods\Hunting\Scopes, Optics & Lasers\Spotting Scopes". The seller is "euroopticltd" and is located in this country: US. This item can be shipped to United States.