12" bar/chain on a 52cc saw. now i'm thoroughly confused

can you measure the distance center to center between 3 of the rivets on the chain? take 3 of the rivets and measure how far the outer 2 are from one another center to center of the other. that will tell us if it's .325 or 3/8lp.
usually these saws come with a much longer bar and .325 chain. first I've seen with a 12er
we'll get to the bottom of this eventually
