Terry Simpson asked in USMA 28451:

Where did I see the recommendation to have the multiplier on the top?


I scanned the ISO standards that I have, without luck. Then I looked at NIST Special Publication 811. I found:


"6.2.5 Use of multiple Prefixes
"In a derived unit formed by division, the uee of a prefix symbol (or a prefix) in both the numerator *and* the denominator may cause confusion. Thus, for example, 10 kV/mm is acceptable, but 10 MV/m is often considered preferable because it contains only one prefix and it is in the numerator."


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