SWAROVSKI ME 1.7X EXTENDER FOR BTX/ATX/STX - SKU: 5268616 EVER CLOSER Innovative and perfectly tailored accessories not only enhance the capabilities and functionality of your SWAROVSKI OPTIK spotting scope, they also help to protect it. User-oriented concepts and design both play an important role. ME 1.7x magnification extender The ME 1.7x magnification extender increases the magnification by a factor of 1.7. You can quickly and easily attach it using the bayonet catch to all the objective and eyepiece modules in the ATX / STX / BTX family. In the case of the BTX 65 and 85, the magnification increases from 30x to 50x, and from 35x to 60x for the BTX 95.