I am looking for a used Sinclair or RCBS concentricity gauge to buy.. If anyone on the forum has one setting on your bench collecting dust and you would part with it please let me know which model and how much you would sell it for.. I know that Midway and Sinclair have new for sale but just want to see if I can buy used to save a buck on something that will hopefully not be used regularly after I confirm my loads are not out of alignment.. Thanks, Rol