The oldest machinery used by Resian knife grinders and preserved to this day are the krösme, which are similar, in their basic structure, to the krame or krašnje (wooden boxes with compartments and straps for carrying the merchandise) used by the kramarji, but conveniently modified for the sharpening with some mechanisms that could move small abrasive grinders.
These tools, which could also be carried on the shoulders, were completely made of wood and had only few metal parts. The mechanism was quite simple. There were two iron shafts (pivots): one for the abrasive grinder and the mule pulley, and the other for the traction pulley. The pedal transmitted the movement to the traction pulley, which in turn transmitted it to the mule pulley through a belt, and then jointly to the grinder .