That’s all well and good, but when you’re in the Persian Gulf and telling some foreign ship that you want an 8,000 yard CPA, you’re wasting your time.
Weight = Mass.
The SI unit for Mass is Kilogram:
https://www.nist.gov/pml/weights-and-measures/si-units-mass
Before you ask.
The SI unit for Volume is Cubic Meter:
PS> The Metric System us not the same as the SI System.
In the Metric system the base unit for weight is Gram and for volume it is Liter and for distance it is Meter.
Interestingly, one Liter of distilled water at 4C weigh 1 kg = 1000 Gram, which fits into a container that is 10 x 10 x 10 Cm. = 0.001 Cbm., or 1 m.t…
So if you can visualize a meter, understand Latin numbers and the decimal system, you got it.
No need to remember all those conversion figures to get it into Imperial and/or US Customary units, which is also different. (Refr. Imp.Gl. vs. USGl.)
Degrees Fahrenheit to degrees Celsius/Centigrade.
I agree, individuals and organizations are going to optimize their situation wrt the use units of measure based on costs and convenience (inconvenience also being a cost).
Unlike most countries U.S. mostly left it up to each company or organization , bottom up as opposed to top down.
This explains why some things in U.S. are metric (UTM) some a mix (food packaging) and some customary (lumber).
Could it have something to do with some US made products are exported to countries that demand markings in metric and others are stickily for domestic consumption?
Save on the cost of printing different labels, or use different size packaging.
PS> Foreign products exported to US usually have US units as well as metric markings.
That’s an example of an organization optimizing their situation.
Never got an injection or IV in the USA which was measured in teaspoons.
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Technically all Imperial measures. They preceeded the metric system which only goes back to 1795. The Imperial system was based on the Winchester system which was developped in the Middle Ages.
The exception in the use of SI units is clothing where everything is in centimetres. When we changed from inches women didn’t want their waist size in millimeters. Shoe sizes are still in UK sizes.
I remember this poster when I lived in London. It probably would draw howls of protest in our currently politically correct climate.
In the US I have never had any medication injected by a fraction of a tablespoon or an ounce.
My doctor prescribes his leeches by the millimeter…
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Everything is a self tapping screw if you try hard enough.
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Strictly speaking weight is a force and the SI unit is a derived unit the newton defined 1 kg⋅m/s2
(Moved)
This extraordinarily beautiful moment of a mother wrench feeding her young will leave you breathless…
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Most people associates Kg with weight, although strictly speaking it is a mass measurement.
When you put a bag with a pound of sugar on the scale it is asserting a force that you can read off in Grams, (Gr) Hectograms (Hg), decimal of a Kilogram, (Kg), or if you want you can pour it into a measuring cup and read it as Milliliters (ml), Deciliters (dl) or in fractions of a Liter.
Of course you can switch your scale to read in Imperial or US Customary units.
(Your measuring pitcher probably are marked up in at least ltrs. and Fluid Oz.)
So you take your crane rated in newtons to pick up a container measured in kilograms
Yes its such a simple system…lol
In a previous career I had to submit dimensions to a distributor of scientific equipment. Boring data entry as part of a sales job. It was Swiss made and entirely metric, but the distributor insisted on what it called “English” units as well as metric. So I converted round metric numbers ie 100 cc into fractional drams. 100cc is 27 and 512/10000 drams. Which is what I submitted. The actual data entry for the website was done in India and they dutifully entered it as such. Nobody ever seemed to notice.