measuring tape
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An EDM or electronic distance measure. These are used by engineers in the construction industry for measuring distances. Hope this helps.
There is no such number.
12 mm is the most precise.
.5 L = 16.9070114 US fluid ounces. So, technically .0070114 fl oz, but for most purposes that do not require a very, very, very, precise measurement, like chemistry, they are basically the same thing.
In terms of accuracy of digits: 124 has 3 significant figures 26.3 has 3 significant figures 30 has 1 (or 2) significant figure(s)* 92.56 has 4 significant figures Thus 92.56 km is the most precise (having the most significant digits). In terms of the distance measured: 124 m is accurate to ± 50 cm 26.3 miles is accurate to (approx) ± 8047 cm 30 cm is accurate to ± 5 cm or ± 0.5 cm* 92.56 km is accurate to ± 500 cm Thus 30 cm is the most precise (having the least range of distances that round to it) * Depends if it has been rounded to the nearest 10 (30 ± 5) or 1 (30 ± 0.5)