Tuber is the tractor manufactured by Labin Progres TPS (TPS Labinprogres or TPS) in Labin, Croatia. The company is a small manufacturer that was founded in 1977 and is a subsidiary of Entrada doo. In 2014, Tuber began to be sold in Turkey as Isoto, and in England as FieldMaster tractors.
Labin Progres TPS was purchased by Cimos Group of Slovenia in 2001, and moved into the subsidiary PPC Buzet doo. In 2013, TPS and subsidiary TPS Kneževac in Serbia were sold to Entrada doo, which previously distributed Tuber equipment.