peanut_coz

Hi guys found a guy local who selling a cosworth crank at decent money and am going to have a look. Before i do though was just wondering what siaze they are as standard (without being ground) ? Got some measuring calipers and just wondered what standard size was and how many times they can be ground ? Dont want to buy it if its on its last legs and any help would be greatly appreciated. Is there anything else i need to look for damage wise and what numbers to look for to see if it is actually a cosworth crank as i presume most cranks look same stripped down. Thanks in advance.