Leica Extender 1.8x for APO Televid AngledThe Leica 1. 8x Extender for APO Televid spotting scopes combined with a 25 50x eyepiece offers extended magnification ranges from 45 90x. Thats right, you can boost the high end magnification of your Leica scope from 50x to 90x! A nearly 100% increase in magnification. The Extender features a mount locking system for secure attachment to the APO Televid angled spotting scope and eyepiece. NOTE: The 1. 8x Extender only works on Leica's Angled spotting