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[–] 29 points 3 days ago (5 children)

Uh, no.

10 feet = 1 decafoot

100 centiyards = 1 yard

1x10^18 attoacres = 1 acre

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  • [–] 20 points 3 days ago (3 children)

    It's obvious that there's 1760 yards in a mile.

    There's 22 yards in a chain, which we can all remember because of the 22 yard line in rugby.

    There are 10 chains in a furlong, which fans of metric can't complain about.

    There are 8 furlongs in a mile, just like there are 8 pints in a gallon.

    And 22x10x8 = 11x10x16 and 11 is easy to multiply by in your head, so it's really very simple to get to 1760.

    /s

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  • [+] -7 points 3 days ago (2 children)
  • [–] 19 points 3 days ago (11 children)

    Do americans actually do math with imperial system at school? That must be a nightmare and have conversion errors between units.

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  • [–] 26 points 2 days ago (2 children)

    This is a common misconception. Americans can't do math and don't learn anything at school

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  • [–] 3 points 2 days ago (3 children)

    Kinda.... The classes "teach" imperial but guns/bullets are metric

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  • [–] 1 point 1 day ago* (last edited 1 day ago)

    It's a pretty heavy mix, many of the most popular rounds are also referenced by their metric size but they're not usually 'useful' sizes in either standard or metric.

    For example:

    • .22 LR = .223in = 5.56 NATO
    • 9mm = .357 mag
    • .40 S&W = 10mm Auto
    • .308 = 7.62mm
    • .44 = no common metric eq.
    • .45 = no common metric eq.
    • .50 = 12.7mm
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  • [–] 2 points 2 days ago (2 children)

    There's almost never a need to involve units outside of science which typically is metric anyway. Also most of these units aren't really ever converted between, no one gives a measurement as 1 mile 300 yards 2 feet 6 inches.

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  • [–] 1 point 1 day ago (1 child)

    no one gives a measurement as 1 mile 300 yards 2 feet 6 inches.

    When this topic came up yet another time previously, USian engineers proudly chimed in saying that their software accepts any kinds of units and converts between them as needed, so they put in US units without bothering about whether metric units are used elsewhere in the project. Ergo, someone does in fact give measurements like in your example.

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  • [–] 1 point 1 day ago* (last edited 1 day ago)

    I have very occasionally seen measurements given in yd + in or yd. + dec ft. I have never once seen measurements given in any of yd + ft + in, mi + yd, mi + yd + ft and definitely never in mi + yd + ft + in. That would be like giving a measurement in km + dm + cm + mm, there's just no reason to do it. Any cad software I've ever used is capable of handling mixed units because it's trivial to implement, but I would be willing to bet it's one of the most underutilized features.

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  • [–] 65 points 3 days ago (10 children)

    It only seems ridiculous because you forgot some intermediates: 5.5 yards = 1 rod, 4 rods = 1 chain, 10 chain = 1 furlong, and 8 furlong = 1 mile. So just gotta remember 12, 3, 5.5, 4, 10, 8. Super simple.

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  • [–] 33 points 3 days ago (7 children)

    Rod? Chain? What is this bdsm?

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  • [–] 17 points 3 days ago (5 children)

    Worse, its the imperial units "system"

    No safeword, no lube

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  • [–] 0 points 2 days ago

    No, it's not "Imperial units" and hasn't been for a long time. It's US Customary units. There are differences between the two systems. If your going to troll, get it right.

    If you can't, go back to your troll cave and cuddle your delicious stinky cheeses!

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  • [–] 16 points 2 days ago (7 children)

    one thing i enjoy way more than i should is use units that are technically correct, but no one uses them like ever.

    like megagrams instead of metric tonnes.

    or 1 dekameter instead of 10 meters.

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  • [–] 5 points 2 days ago (3 children)

    I measure battery capacity and electricity consumption in J/kJ/MJ, as intended. None of that kWh bullshit.

    It also makes for fun comparison with energy value of foods.

    Energy is energy, after all.

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  • [–] 4 points 2 days ago (2 children)

    I only use metric when it's in forms nobody else uses or recognizes at a glance because I need to be difficult. Decimeter is perfect for like, height of a person, for example. Why do they use CM?

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  • [–] 4 points 2 days ago* (last edited 2 days ago)

    Why do they use CM?

    Precision. "17dm" can be anything between 16.5dm or 17.5dm.

    You could of course say "I'm 17.5dm tall", but at this point "I'm 175cm tall" is shorter (no dot).

    That said I've seen plenty people measuring height in metres and then centimetres. Usually something like "I'm one [metre] and 75 [centimetres] tall".

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  • [–] 12 points 3 days ago (4 children)

    1,000 kilometres = 1 megametre

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  • [–] 2 points 3 days ago (3 children)
  • [–] 2 points 2 days ago (2 children)

    1 megametre equals: 0.001 gigametres 0.000001 terametres 0.000000001 petametres

    Meanwhile, 1 megameter is the same as: 0.001 gigameters 0.000001 terameters 0.000000001 petameters

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  • [–] 2 points 1 day ago* (last edited 1 day ago) (1 child)

    True, I did not mean my comment as a real conversion tho.

    Now, speaking of megameters 😈 I'm pretty sure you can tell me which prefix corresponds to this from the top of your head. One of my favorite ones ever alongside its negative.

    n-meter = 1,000,000,000,000,000,000,000,000 megameters.

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  • [–] 22 points 3 days ago (3 children)

    Sir, this is a Wendy's, we measure in common units around here...

    🍌 https://bananaforscale.info/ 🍌

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  • [–] 9 points 3 days ago

    Meanwhile the UK naming their currency after a sex act.

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  • [–] 9 points 3 days ago* (4 children)

    1 acre

    UK 4,046.85642 m²

    US 4,046.87261 m²

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  • [–] 8 points 3 days ago (3 children)

    1 acre (us international acre)=  0.999996 acres(us survey acres).

    Even inside the US they use two different measures for acre.

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  • [–] 8 points 2 days ago*

    The ratio of a circle's circumference to its radius is now 10

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  • [–] 8 points 2 days ago* (last edited 1 day ago) (1 child)

    At least the US temperature scale is safe from ridicule, as Lord Fahrenheit was German/Polish.

    Edit: /s, obviously.

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  • [–] 15 points 3 days ago (2 children)

    My contrarian brain:

    • 1 inch = 1 cm
    • 1 yard = 1 meter
    • 1 mile = 1 km
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  • [–] 14 points 2 days ago (11 children)

    I've said it on this platform before: I will build furniture in inches until my hands can't hold a chisel anymore. The inch system arose around the needs of carpentry and woodworking, it works in base 12, which is outright superior to base 10, especially when you divide by 3 and 4 more often than by 5.

    Also, the closest tape measure I have to hand is my 5m metric tape. I build things in metric, just...not furniture.

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  • [–] 10 points 2 days ago (1 child)

    Wow, base 12, I never thought of thas! You halve it, quarter it, and third it, and still end up with clean integers.

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  • Yeah; you'll often find boards in America milled to 3/4" or 1 1/2". Those are 1/16th or 1/8th of a foot. A lot of boards used in furniture are 3/4" thick. Half of 3/4 is 3/8, a third of 3/4 is 1/4. It solves the problems we need to solve, and the metric woodworkers start sounding how teaspoon/cup/quart cooks do.

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  • [–] 7 points 2 days ago* (last edited 2 days ago)

    A dozenal metric system would work as well as the decimal metric system, as long as everything else was base-12:

    in base 12 in base 10
    1m'm = 10⁻³m = 0.001m 1m'm = 12⁻³m = 1/1728m
    1c'm = 10⁻²m = 0.01m 1c'm = 12⁻²m = 1/144m
    1m = 1m 1m = 1m
    1k'm = 10³m = 1000m 1k'm = 12³m = 1728m

    Since we're at this might as well say the day has 10₁₂k's = 20736₁₀s. Each k's is exactly two of our current hours, and each "new second" is roughly two four of our current seconds. Enough of this Sumerian mixed base already!

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  • [–] 6 points 1 day ago

    I'm a carpenter as well, and I hear what you're saying, but also my coworkers and I were just talking yesterday about how much better metric is 😅 Every base-12 advantage is weakened by the fact that I'm constantly expected to do fractions. Everything in metric is a whole number and it's so hot. Love it when I get an actual number to build something to, instead of a math problem.

    If you've ever ordered lumber from a Canadian company, you know how much easier it is to calculate and order in metric units vs. board-feet. I feel bad for their sales reps who have to deal with us Yankeestanis.

    Also, all the really nice chisels and hand tools from Japan and Europe are already in metric.

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  • [–] 4 points 2 days ago (5 children)

    What do you do when a piece you're cutting isnt exactly a foot, say, 11 or 13 inches? I know nothing about woodworking, but I'm assuming there isnt a unified standard to make everything match to the nearest whole foot, so then this whole base 12 thing goes out the window, or am I missing something here?

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  • [–] 3 points 1 day ago (1 child)

    Basically there is a conflict going on amongst the woodworkers of the world between those who think clearer in decimals, and those who think clearer in fractions. The fraction folks will tend to prefer standard units, the decimal thinkers will tend to prefer metric.

    What's interesting to me is: you only ever hear Americans complaining about metric, but you never hear woodworkers from Europe or Japan talk about the advantages of standard units... while the Europeans and Japanese are also pumping out generally much higher-quality woodworking than most folks in the USA are. You can probably tell which I prefer lol

    My take is, if the standard units were really that much better, I think Japanese and French folks would be using them, because their cultures care a looot more about fine woodworking than the USA's culture does.

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  • [–] 0 points 1 day ago (2 children)

    You look at your tape measure, at the number 11 or 13 as appropriate, put a mark there, then take it to the saw and cut it.

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  • [–] 1 point 1 day ago (1 child)

    I meant, for cutting in thirds and quarters. An exact foot you can cut at 3 and 4 inches, but if a board is 13 inches, divide that by 3 and you have to cut at... 4.3333333 inches?

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  • Same thing you do for cutting 13cm into thirds: make one third a bit fat. Go 4 1/4, 4 1/4 and 4 1/2". Or construct it.

    That's not a problem I face in the wood shop a lot though. A more practical problem: We tend to mill boards to 3/4" in thickness. To do a half-lap joint, you need to cut away half the thickness of each board and then lap them over each other, you can set your depth to 3/8" and you're there. If I'm going to do a bridle joint or a mortise and tenon, a third of 3/4" is 1/4". Show me a third of 19mm on a metric ruler. I'll show you where it is: 6, 6, and 7mm.

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  • I've setup a software that generate quotes, sales invoice and production order for a windows and door company. The sales person enter the dimensions and option of the window and it automatically calculate the price, the exact amount material, deduct it from the inventory and generate the cutting and assembly instruction.

    They were all working with fractional inches. I've started setting up the system using inches and it was a NIGHTMARE ! I quickly decided to convert everything on metric in the back end and to do all the calculations on that and I reconvert it in inches at the end.

    Now most of the workers are using metric because it just make more sense.

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  • [–] 6 points 3 days ago (6 children)

    I kinda want a hexadecimal version of the metric system.

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  • [–] 9 points 3 days ago* (2 children)

    In hex:

    10 mm = 1cm
    100cm = 1m
    1000m = 1km
    1km - 1m = FFFm = 0.FFFkm

    Still works fine.

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  • [–] 2 points 2 days ago* (last edited 2 days ago) (1 child)

    Wouldn't it be

    • 0xA mm = 0x1 cm
    • 0x64 cm = 0x1 m
    • 0x3E8 m = 0x1 km
    • 0x1 km - 0x1 m = 0x3E7 m = 0x3E7/0x3E8 km = 0x0.FFBE76C8B4395810624D... km

    Edit: nvm I see what you mean, but then we should change the units too, to something like xmm, xcm etc.

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  • [–] 3 points 3 days ago (2 children)

    Measurement system doesn't have anything to do with numerical base. You can use any base with any system.

    16m = Fm

    which is pretty ass if you ask me

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  • [–] 6 points 2 days ago (1 child)

    You've been hit by...

    You've been struck by...

    A smooth metric system

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  • [–] 6 points 3 days ago* (last edited 2 days ago) (2 children)

    Americans choose to meassure thier dicks with the thumb of a british king instead of using meters... or GIGAmeters... there are no correct awnsers, right?

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  • [–] 2 points 2 days ago (1 child)

    0.0000000003448 GIGAmeters just doesn't sound that impressive...

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  • [–] 1 point 2 days ago* (last edited 2 days ago)

    3,5 10^-10^ Gm

    Also, notice that ypu can round it up a bit...

    And, who meassures his dick... you just need an honest aproximation.

    Exemple: "my dick? You mean from the root? I think it's just a fraction of a gigameter.." which is a 100% honest and humble response.

    Edit: one can also use astronomic units.... 1 AU =~ 150 Gm

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  • [–] 5 points 2 days ago
    [–] 4 points 2 days ago (1 child)

    Whats funny is the oil and gas industry has orders of magnitude worse units. So much so, I would say the imperial system is scared of it.

    Entertaining video ranting about this

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  • [–] 4 points 3 days ago

    I mean the yard and pound have been defined by metric for a long time so it's really just an indirect metric system so the USs feelings don't get hurt.

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  • [–] 4 points 2 days ago (1 child)

    22 yds to a chain, 10 chains to a furlong, 8 furlongs to a mile.

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  • [–] 4 points 1 day ago (3 children)

    The one thing metric screws up is file size.

    A gigabyte is 1000 megabytes or 1,000,000 kilobytes or 1,000,000,000 bytes.

    A gibibyte is 1024 mebibyte or 1,048,576 kibibyte or 1,073,741,824 bytes, because it needs to go by increments of a power of 2.

    This would be fine except gigabyte also means gibibyte. So if a file claims to be N GBs, I don't know if it actually means metric GBs or GiBs.

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  • [–] 4 points 1 day ago

    I got a question about hard drive sizes on a math test 15 years ago. Was super frustrating, since I didn't know wether or not the person who wrote the test, knew the difference.

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  • [–] 4 points 3 days ago
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