Metalurgica de Sant-Martin BarcelonaMadrid 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.

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