Leitz 513578 Dual Observation Asymmetric Discussion Tube W/ Head, 2x Eyepieces

Leitz 513578 Dual Observation Asymmetric Discussion Tube with Binocular Head, 2x Eyepieces. Observer is used with some general cosmetic wear. Optics are clean and clear. Internal pointer has full movement and works great. Tested on and removed from a Leitz Laborlux 11 Microscope. Head "Quick" releases work smoothly with no binding or sticking. Heads Interpupillary Distance and Diopter Adjustment works without issue. Rubber on eyepieces is cracking. Info on items: Leitz 513578 Dual Observation Asymmetric Discussion Tube Leitz 512821/20 Binocular Head 2x Leitz 519748 Periplan 10x/18 eyepieces ALL QUESTIONS AND OFFERS WELCOME Buy with confidence, we have a 100% satisfaction guarantee.