John Mercer wrote:
Liquid
1 fluid oz� = 28 ml.
1 imp. Pint = 570 ml.
1 imp. Qt = 1140 ml.
1 imp. Gal = 4.5 l.
1 U S gal =3.8 l.

The heading for this set of values should be "volume". These are the volumes usually used to measure he volume of liquids, but calling the units liquids is misleading. Liquids have temperatures also, but you wouldn't head a list of temperatures as "Liquid"; and liquids have mass but you wouldn't label a list of masses as "Liquid"; etc.


I suppose you could label your list "Liquid volume", but I personally wouldn't say that. The units listed are volume units and should be labeled as such. (There is not anything technically wrong with measuring the volume of a solids using these units. Haven't you ever bought a gallon of ice cream? And two of the units you list, litres and millilitres, are also quite commonly used to measure gasses also.)

You repeated this error under "Metric Symbols" where you identified the litre as the unit for measuring "Liquid". It is not. It is the unit for measuring volume and is most commonly used to measure volumes of FLUIDS (liquids AND GASSES).

And in the list of speeds ...
30 mph = 50 kph
40 mph = 60 kph.
50 mph = 80 kph.
60 mph = 100 kph.

.. you have used an incorrect symbol for kilometres per hour. The correct symbol is "km/h".

Also, everywhere in your table (not just in the above samples), the periods at the end of the SI symbols is incorrect. SI symbols are symbols, not abbreviations. Therefore they do not have a period at the end. (Thinks of other symbols like $, @, &, %, etc. You wouldn't put a period after any of those, would you?) A period is correct if the symbol is at the end of a sentence, but your examples are not sentences.

Regards,
Bill Hooper
Fernandina Beach, Florida, USA
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 SIMPLIFICATION begins with SI
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