Now I've only been fishing for a few months and I almost feel a bit silly asking this question - but what does the reel size actualy refer to? E.g. Abu 6500, Exage 2500 etc etc. I realise that a 10000 is bigger than a 6500 which again is bigger that a 2500. But what do the numbers actualy mean? Is it a measurment of some form or is a just a relative number used by manufacturers. Also does the reel size mean the same thing for both fixed spool's and multipliers?