Swarovski Modular Objective 25-60x85 (Arca Swiss Foot)The Swarovski Modular Objective 85 mm (Arca Swiss Foot) objective module may be combined with either the ATX angled eyepiece module, the STX straight eyepiece module, or the BTX binocular eyepiece module to form a complete spotting scope. The mount foot is now Arca Swiss compatible and can be used in the Swarovski Professional Tripod Head without a mount plate. The 85 mm objective module has a range of 25 60x magnification with either eyepiece module,