Re: deadin's brass rod accessory.
The more I look at the picture, the more I think Form is the Clue to Function. I don't think the brass knob on the Krag rod-section was a 'handle'. I think it was used as the 'Head' on an improvised loading-rod. Maybe for a muzzle-loading rifle or shotgun (Range-Rod). IMHO.
KragRod.jpgKragRod-knob.jpg