Ah OK, I see, so there's no real direct correlation between the numbers of the chain and the actual measurements except only the pitch. I guess they draw the numbers from a hat and assign characteristics at random..
Sorry the chart doesn't mention the outside width, mustn't be standardised at all; but actually I think you can infer a little about plate thickness from the relative weights.
Ah OK, I see, so there's no real direct correlation between the numbers of the chain and the actual measurements except only the pitch. I guess they draw the numbers from a hat and assign characteristics at random..