I've been reading about Hardy's multiplier gearbox, as found on some models of Marquis and Featherweight reels.
The gearbox said to be a planetary design, which interests me from a technical perspective.
They're not exactly thick on the ground in Australia, and my understanding is that you risk extreme damage if you attempt to open one. Not something I'd want to do to a rare and valuable item.
Does anyone have photographs or drawings of the gearbox that they could share?