From the book Hvem er Skrivekuglens Opfinder, written by Malling-Hansen's daughter Johanne Agerskov, we know how Malling-Hansen made experiments with a model of his writing ball made out of porcelain.
Lucille Ball | Dragon Ball | Headbangers Ball | Dragon Ball Z | Gus Hansen | Great American Ball Park | Ball State University | Creative Writing | ball | Alan Ball | Hugo Ball | Ernie Ball | Al Hansen | Stan Hansen | Cannon and Ball | Albert Ball | National Association of Professional Base Ball Players | Gunnar Hansen | Fish ball | Alan Ball, Jr. | writing | Ron Hansen | Piccolo (Dragon Ball) | Philip Ball | National Association of Base Ball Players | Martin Lundgaard Hansen | Mark Victor Hansen | Kai Hansen | James Hansen | George Ball (voice actor) |