Just a correction there, 1.02m is in fact 1020mm, 1m being 1000mm. So 3.05m/3 is actually 1016mm more or less and your estimation of 1020mm would in fact put you off by 4mm after one itteration and by 8mm for the next. Not much, but even so 1016mm is very measurable on all of the tape measures I have in my garage.
I live in a metric country(South Africa), so I spotted the problem easily being used to converting between meters and millimeters.
For interest sake, our country switched to metric long before I was born even, but I would still say something is miles away, or your off by miles. It’s just a figure of speech. And when I race, I race the 1/4mile, not 400m…wink
