A little while ago I found an A.Schact Ulm Travegon 35mm f3.5 LTM lens at an agreeable price. I had been looking for a 35mm lens in LTM mount that was less soft than the Jupiter 12. A.Schact Ulm started making lenses in the late 50's and kept it going to sometime in the 70's. As the name implies they were located in the university city of Ulm, Western Germany. At some point they started cooperating with Wirgin which also had the Edixa brand. The lenses made for Edixa are marked Edixa, but are otherwise the same design as A.Schacht lenses.
The Travegon 35mm lens was made in several mounts like M42, Exacta and LTM. It is a well built lens, nicely finished in black polished paint with zebra striped focus and aperture rings. It's length from filter ring to flange is 51mm, max diameter 50mm and it weighs in at 195g. It has clear markings and the focus scale is in both meters and feet, from 1m/3.3ft to infinity (the minimum focus distance of the M42 lens is 0.5m). The DOF scale is very nice too, but it has a red dot at f11 that puzzles me. It's too far away from the focus mark to be the IR setting. The focus movement is very well damped, on par with a modern Zeiss lens.
The aperture range is f3.5 to f22 with 8 blades (the standard M42 version has 6 blades). The front of this lens spins around when you focus, so there are two aperture scales on opposite sides of the lens. Setting the aperture is easy with very distinct clicks for each setting. Just be aware that it has half stops between 4, 5.6 and 8 (see picture).
The front glass is quite a bit recessed, so with some care it could be used without a hood. It is hard to see if there is any coating on this lens, but it is said to be single coated. The filter ring is M48 (M49 on the M42 version), not the most available size. A step up ring to M52 or M55 is a good idea. Mounting this lens on a Sovjet rangefinder throws the focus mark 10 degrees to the right. On the Canon P and Yashica YE it is smack in the middle.