Hi, Since there have been a few recent postings on double burner cookers I thought I would share some images of my Primus 535. This is a two burner, paraffin, stove with regulated, silent burners. This stove came to me from Sweden, via Austin, Texas from the estate of a retired Military man. I renewed the washers and a pair of burner caps and soon had it operating well. Both burners passed the "Tea Test". Here is a close-up of the burner regulator controls and the pumping arrangement: You can also make out the position of the large 4 pint tank and the connection to one of the burners. A well made, powerful stove but perhaps better suited to Base Camp than back-packing! Regards, Kerophile.