Ibrahiim, 
This is quite interesting, as I dont remember to have seen these dot markings in the middle of fullers. 
I too have these dot markings, but at the beginning and at the end of the fullers. It is almost as if tthe dot marks 'closes' the fullers, but so far I dont know what they indicate. 
Jens
		 
		
		
		
		
		
		
		
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