1 unit seldom use Agema 12 x 9 deg with 71mm 2x telescope lens for sales. When the target in question is a distance away it may be useful to use a telescopic lens. The 12 deg lens is a popular lens accessory and provides 2X magnification compared to the standard lens. It suitable for FLIR ThermaCAM P-/S-series and ThermoVision A40 series Infrared Thermal Imager. Any queries, contact : brich@singnet.com.sg