The Öchslebahn is a narrow gauge steam museum railway built between Biberach an der Riß and Ochsenhausen. Gauge width of the line is 750 mm. Only the part from Warthausen to Ochsenhausen, about 20 km, is left and is used as a museum railway today. The rest of the old line is just a cycling road today. These are some of the old coaches used in the tourist trains today.
Picture from Warthausen 3.7.2019 by Ilkka Siissalo.

A full train, just waiting for the tourists and the locomotive.
Picture from Warthausen 3.7.2019 by Ilkka Siissalo.

This old wagon "Stg 2076" is from the year 1908. It was built by the Waggonfabrik Rastatt.
Picture from Warthausen 3.7.2019 by Ilkka Siissalo.

Still until the 1980s there was a lot of cargo traffic on the Öchslebahn. Mostly this was done by rolling normal gauge cargo wagons on top of specially made bogies, in German called as Rollschemels, which then allowed to run normal gauge wagons on the 750mm line. This is the place where the gauge chaning took place and in the picture can still be seen some of the adapting rollschemel bogies.
Picture from Warthausen 3.7.2019 by Ilkka Siissalo.

The other way round: This wagon with narrow gauge rails on top of it, was used for transporting narrow gauge wagons on normal gauge rails.
Picture from Warthausen 3.7.2019 by Ilkka Siissalo.