spacing out at the local mill museum

a while ago back home in Norway i was visiting a local history museum in an old flour mill. lots of old stuff i won't bore you with today but there was this cylinder that caught my attention

wow lots of potential here

viewed from the other side facing a somewhat more recent tractor

i don't remember exactly how this cylinder was used. in fact i don't remember much at all except some spacy designs and colors coming into my head