Two white plastic discs that rotate freely, each with two semicircular arms which again rotate freely.

More pictures:

    • mykl@lemmy.worldOPM
      link
      fedilink
      English
      arrow-up
      1
      ·
      edit-2
      1 year ago

      That’s how I got my hands on this – rootling through some of my partner’s bags looking for perplexing stuff.