Dears, I have found such jets/nipples for sale. These are described only as “Nipples for Radius, Optimus stoves and lanterns”. They are most likely from Swedish military surplus. Anybody please can somehow recognise and write what type/power these nipples are and which stove/lantern model fit? All the best, Piotrek
That looks like the jet for Radius 119 when they are converted to use alcohol. I.e., it is not for paraffin/kerosene. They use a small tube that is put over the jet to restrict the air since alcohol conversions use less air. The one on top in my image below shows the alcohol jet with its air restriction and larger cleaning needle (alcohol jets have a larger orifice than kerosene ones). The lower one is a standard kerosene jet and needle.
