Here is a picture of some wensleydale that I have combed using the dutch combs and put through a diz to produce a roving ready to spin. This type of preparation is necessary for worsted spinning. Although the technique required is short draw - I have to keep reminding myself to keep my hands well apart to allow for the length of the staple.
Unfortunately I have now broken my dutch combs when trying to straighten the tines, so I am now on the look out for a set of 'viking combs' or 'english combs' - hopefully I wont have to spend a fortune.