29.11.2017, 14:04 
		
	
	
		I think the same.
And the phrase "with a single ball" is just his mistake.
He meant "with one bowl for weighing" (="mit einer Tasse zum Wiegen").
	
	
	
	
And the phrase "with a single ball" is just his mistake.
He meant "with one bowl for weighing" (="mit einer Tasse zum Wiegen").

