The TEM stereo optics type no. 884080 is a rigid stereoscope with 50 ° angle of view, 73 ° angle and 13.8 mm outer diameter. It has an integrated documentation optics and innovation as a result is autoclavable soldered end window. Stereoscope as it has two eyepieces with an average viewing distance of 64 mm. This is for a German determined in a statistical average. Through a rotating disc can be the eyepieces to +6 mm and -6 mm change, thus covering 97% of the previously mentioned statistics for men and women from. The side sliding eyepiece also has both sides soldered end window. To avoid flashovers on the nose of the user by capacitive discharges, the stereo viewing has a removable, sterilizable plastic cover.It includes two optical channels with a lens system for the two eyepieces, a fiber optic light guide, a third for the rinse (divided small behind the Luer connection in two channels) and a fourth for gas insufflation.