Metalurgica de Sant-Martin Barcelona – Madrid SA road roller with Kaelble engine.
The German company Kaelble from Backnang (Germany) was a construction machinery, engine and commercial vehicle manufacturer and was best known for its tractors for road scooters , dump trucks and bulldozers. From 2002 Kaelble was a division of Terex GmbH under the name TEREX-Kaelble. In 2010 Atlas Maschinen GmbH took over all of the Kaelble shares.