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Diregarding the numbers, the order of size of measurements (from largest to smallest) is miles > Yards > Feet > Inches. So any measurements in inches will be the most precise.
Decimeter. From largest to smallest: kilo hecto deca UNIT deci centi milli
The greatest possible error should be one half of the smallest unit used. The smallest unit used here is a tenth of a metre - or 100 cm. So the greatest error is 50 centimetres. Unfortunately, measurements are often given to spurious levels of accuracy.
unit
you order unit fraction like this by smallest to biggest or biggest to smallest