Metric Parochialism

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Saddle Mountain — Wikimedia Commons

By The Metric Maven

I’ve noted from time to time reader comments that go something like this: “clearly The Metric Maven’s never lived in a metric country, or he would understand the importance of centimeters.” This of course ignores the fact that Pat Naughtin lived in a metric country and was the person who (along with Sven) first brought me to a realization about centimeters and other kludgy uses of the metric system. It also appears to confirm the proverbial idea of the provincial American in the minds of non-Americans.

What was most amusing for me as I read this criticism, was the knowledge that I had, in fact, lived in a metric country as a boy. I had resided in Mexico. The first metric surprise met us as we crossed from Laredo, Texas into Nuevo Laredo Mexico; it was the road signs. They were all in Kilometers. As we headed down the open road with the sun setting in a burned orange pastel sky, the large reflective road signs only told us how many km it was to Monterrey–no miles–no mas. In those days no American car had a speedometer with graduations in Kilometers, only miles. As we were having a family discussion about this, and whether we were currently speeding or not, it was suddenly realized that a second set of small numbers existed on the speedometer of our Volkswagen Beetle. They were graduations in in km/hr. In a microsecond, the small numbers which had gone almost unnoticed for so long became of paramount importance. We had the Rosetta Stone for travel in Mexico, because of the Germans. Had we been in a provincial American car, life would have been much more complicated.

I looked over at the illuminated dial of the speedometer and realized that we were just above 100 Km/hr, so a good guess at an average rate of speed would be about 100. The distance to Monterrey was about 234 Kilometers, which I realized immediately was around 2.3 hours. It really struck me what an amazing coincidence that was–and how simple.

The metric system continued to surprise me now and then in Mexico. The first time we stopped for gas, the amount of gasoline registered on the pump was far more rapid than I expected. I puzzled for a moment, then it hit me. It’s selling us gasoline in liters. One morning a delightful young woman who made my acquaintance at the American school greeted me. I mentioned it had been very hot and seemed even hotter today. She agreed and stated:

“Yes, very hot, I heard it’s going be almost 40 degrees today!”

My mind screeched to a halt. I babbled in astonishment “Forty degrees?”

She restated her assertion “Yes, 40 degrees.” with a bit of impatience with my confusion and a countenance that insinuated I might be a bit dense.

Suddenly the realization hit me: “Oh, oh, you’re talking metric?” With this revelation, I could see the surprise on her face that I seemed clueless about something so prosaic as the weather, melt into recognition. We were now speaking the same measurement language. An American in Mexico would even have a hard time discussing the weather it appeared.

I have a vague memory of a science magazine I bought there, but a clear one that the magazine had a length which it compared with a test tube’s length—in millimeters.

Life in Mexico for the next few months proved interesting. There were many unfamiliar foods like potato chips with chili and lemon or the section a large white plant of some type with seasoning, but one could almost always get a hamburger anywhere. A woman who was helping my mother with our apartment made what she called azucar tortillas or “sugar tortillas.” They were a pre-teen epicurean delight, and an almost perfect complement to a bottle of Coca-Cola. When the time came to leave Mexico, I asked for the recipe. I had a translator friend present to help with the documentation. Then a stumbling block appeared, the cooking was all done in metric and they had no idea how to change it to American measurement. Once again I was foiled by the lack of metric use in the US. That was the last time I ever had azucar tortillas. I looked on the web as I wrote this, and to my astonishment, I found a recipe for Sugar Tortillas. I made a batch and they are exactly as I recall. The irony is not lost on me that the recipe is in Ye Olde English and I had to convert it back to metric.

Metric_Maven_Sugar_Tortillas_Small

Sugar Tortillas — Back from Ye Olde English Oblivion

The strange assumption (in my view) made by commentators who live in other countries is that they have perfected their use of the metric system, and I should submit to their usage. I have instead come to the conclusion that many metric countries could use metric reform. This leads me to a statement by John Bemelmens Marciano (JBM). In his metric challenged book, Whatever Happened to The Metric System, he complains about the complications of metric measures:

I moved to Rome in 2000 and spent most of my time learning Italian. In order to make dinner, I also had to learn to talk metric, as nearly everything in the market is bought by the etto, which is short for ettogrammo, or hectogram. But measures are a lot harder to learn than most foreign vocabulary. Whereas a casa is the same thing as a house and a macchina precisely a car, an etto is about halfway between three ounces and a quarter of a pound. Our standards—feet, pounds, quarts, degrees—are nouns, which we conceive as something concrete. To think of them as anything different takes a serious taxing of the brain. (page 5)

The exclusive use of grams allows one to use integers for everyday values of mass. A hectogram is 100 grams. This is the mass of a hamburger that I make on a regular basis. I go to my meat market and ask for 0.45 pounds and when I get home it’s very close to 200 grams. I measure and make two 100 gram burgers (give or take a couple grams). When one looks at the masses offered in a British supermarket, they are in grams or Kilograms alone. There are no decagrams or hectograms. The British—who are still not completely metric—clearly saw the simplicity of grams with integer values and don’t bother with the prefix cluster around unity. I suspect that because the UK waited so long to become metric, that when they did, the British were more thoughtful about its implementation. Countries like France (1795) and Italy (1861) transitioned without the 20/20 hindsight that Australia would utilize a century or so later. In my essay Familiarity Versus Simplicity we see a 19th century American pro-metric organization pushing for an amazing amount of unit proliferation within the metric system in 1877. I’ve had many discussions about the implementation of the metric system in the US and as we are essentially the last, we should do our best to implement it in the most streamlined fashion possible.

Hector-Grams

Click to enlarge

JBM lived in Italy and found the adjustment to the language easier than coping with their weights and measures. He complains that:

Americans in Europe are constantly being called upon to defend their country against all sorts of attacks. Why do you Americans think you should be different? Why can’t you admit when someone else’s way is better? Europeans find our system of measurement a perfect example of our stubborn stupidity. Why on earth do we insist on keeping such a nonsensical, archaic system of measures when there is another system that makes perfect sense and is used by the entire rest of the world?

In answer to such questions, I at times acted like Wolfe’s “good little colonial,” but I did think that Europeans do certain things better than Americans. In my heart of hearts, however, I never believed that one of them was the metric system.” (page 5-6)

JBM then managed to write an entire book with metric in its title without bothering to learn anything about the metric system. If he had he might have questioned the usage, not the system.

I had an odd encounter a couple of years back at an engineering meeting. The device we were building was to be for a European country. Strangely they used a Canadian company as a supervisory contractor, and I found myself across a table from three engineers who were all from separate European countries. We were going over the specifications and the measured performance of the device when one of the foreign engineers had had about enough. He was tired of seeing inches, foot-pounds and all of the Ye Olde English that permeated the US engineering work. He pointed out that the European country who had funded this project specified it to be exclusively in metric. The other U.S. engineers (working for another company) began an attempt to defend the incredible amount of pigfish introduced into this “metric only” design. The European engineers would have none of it. One began to castigate the US for not converting to the metric system, and the US engineers in particular for fighting it.

The engineers in the room took note that I had remained quiet throughout the brouhaha—which they realized was a bit of an anomaly. The lead European engineer queried me for my thoughts. I took a breath and said (as best as I can recall):

I completely and totally agree with you. The US should have become metric years ago. It is an embarrassment that we have not. If I had my way we would change TOMORROW. However the use of metric by metric countries is often kludgey and poorly implemented. You have several of your specifications in centimeters, this is poor practice. The Australians use millimeters for building construction and never need a decimal point. If we are using millimeters with a decimal point, you know it’s engineering precision. There are many other effective ways to present metric data and specifications that I would be glad to discuss afterward.

One US engineer in the room actually gasped when he heard the Australians build their houses with all metric in millimeters. This was before I found out that the UK also uses millimeters. After one US engineer thought about it he said: “sweet!” The European engineers across from me had a look of surprise and seemed uncertain what to say. The US engineer in charge of all the specifications began removing centimeters with decimal points and changing them all to integer millimeters. Indeed when we needed a decimal point with millimeters, it was for precision parts. I also insisted on changing values like 0.012 millimeters to 12 micrometers. US engineering drawings with metric dimensions are generally in millimeters.

JBM could not offer a statement like mine to the Italians, because he knew nothing about the elegant use of the metric system. After he wrote a book, ostensibly about the metric system, one might expect that he would know enough about it to realize the poor usage he described. It was not like this information was hidden. I was writing my blog at that time. Pat Naughtin’s videos, missives and newsletters were and are on the web. At a certain point, this sort of ignorance by an author who proclaims to know enough about the metric system to author an anti-metric polemic speaks for itself. One can remain provincial even if they have traveled extensively, and be worldly even if they have never ventured outside of their city.

10 thoughts on “Metric Parochialism

  1. When he came from Australia to visit me in Texas in 2004, my good friend Mike Joy brought samples of construction diagrams from Down Under. On them were dimension notations of unlabeled integers in the thousands and were assumed to be millimeters (example: 12300 on one side, 16900 on another).Mike also gave me an 8 m metal tape measure to match (from zero to 8000 mm), which I still have, and prize, today. The procedural elegance of all this nearly brought me to tears. From that day to this, I have been so bewildered as to why a nation so enamored of so many standards as the United States of America will not seize upon the opportunity to fix a more perfect standard of measurement that is offered by the text of its original Constitution.

    • Hehehehehe….I don’t like METRIC UNITS!!!! Hurray for the INCH… FOOT… PINT… AND OF COURSE “MILES & MPH”…!!! As one student told me one day, very angry: “The U.S. will never convert to the Metric System!”
      Hellooo… Is any body home? Is anybody listening…? (Just joking a little bit….)
      Don’t worry…, Be Happy…, Don’t get mad…, Don’t be angry… In the “31 Century” … (Hehehehe…) We, Americans, will convert to SI…

      • Some of us have converted already. Hopefully, your student doesn’t want a job in any of those industries that have converted, eg, automotive or pharmaceutical.

  2. “They were graduations in in km/hr.”

    I’ll bet you they weren’t! I’ll bet you they were in km/h. I’ll bet you that “r” was never there.

    Selling by the 100 g is common in every metric country. It is more common than the kilogram as most people buy small amounts. The Italians and a few others are the minority in using the term hectogram or ettogrammo in Italian. But, at least when they go else where and see “per 100 g”, they know exactly that that is a hectogram or people who go to Italy know that an ettogrammo is 100 g. It may set one back a few seconds at first, but it is no tragedy compared to relating pounds to grams.

    I have never, never, never encountered engineering drawings from Europe or elsewhere in centimetres. It has always been and always will be millimetres. Centimetres are only used by the people on the street for shopping. They may express their height in centimetres or buy their clothes in centimetres, but never are centimetres used in engineering. This is obviously an American thing when converting inches.

    Those international engineers should have learned one big lesson. Don’t deal with American engineering until American engineers can prove a working knowledge of metric units.

  3. Also in Scandinavia and elsewhere, the “hekto” is often used in everyday life.

    In Italy, BTW, there is also the “quintal”, which is still used as a customary technical unit: i.e., 1 q = 100 kg = 0,1 t.

    https://en.wikipedia.org/wiki/Quintal

    https://it.wikipedia.org/wiki/Quintale

    These “customary” uses of the metric system are perhaps rather unavoidable, for historical reasons, in countries that metricated long ago, but will probably be superseded once the SI will really begin to modernize itself, worldwide.

    Of course, technical drawings are anyway always correctly in millimeters, everywhere…

    • But, they are always measured as 100 kg on a kilogram scale. I doubt you will find a scale calibrated in quintals.

  4. Here’s a piece of kludgy metric for you, Maven:

    My new phone includes an atmospheric pressure sensor (no idea why Samsung thought that would be a good idea to include). When I select it in Sensor Readout (free on Google Play if you want to try it yourself), it’s calibrated in hectopascals, which seems like a really weird choice of prefix to me, given that when dealing with pressure, I’m used to seeing it in kilopascals.

    It and the near/far sensor are the only ones which use the prefix cluster (with the near/far sensor reporting 0 or 10cm). Everything else is in base units or a power-of-a-thousand prefix: The accelerometer is in metres per second squared, the magnetometer is in microteslas, the gyroscope in radians per second, light sensor in lux, humidity in percent, and room temperature in degrees Celsius.

    Yeah, I get using centimetres for the near/far sensor, given how commonly they’re used, but hectopascals for pressure? That’s just weird.

  5. I understand why you capitalize the kilo symbol, to indicate that the prefix multiplies, just like for units it’s capitalized when it’s derived from a name (which is why the symbol for liter should be a lowercase “l”). But why capitalize the written out word such as “Kilometers”? Also why do you use “hr” for the hour symbol, instead of “h”?

    • Braulio:

      I discuss most of this usage in my blog The Elements of Bile, but I don’t believe I clearly explained the capitalization of Megameters, Gigagrams, Terameters and such. I’m not sure I explicitly explained it in my book The Dimensions of The Cosmos. This is an oversight.

      My argument for using capitals for the magnifying prefixes is to bring attention to the less used larger and smaller prefixes and to make people realize if they are magnifying or reducing by enforcing capitalization. For instance if I say something is 400 yoctometers or 400 yottameters distant or 300 zeptometers or 300 zettameters distant people generally have no clue if those are large or small quantities. If I write it 400 yoctometers and 400 Yottameters, the capitalization gives a person an idea that Yotta is a magnifying prefix. If students being taught the metric system write that our galaxy is one Zeptometer across in a paper, the instructor would argue it should be Zettameter and if it was zepto it should also not be capitalized. This usage would make teachers, students, engineers, scientists and such actually think more about the prefixes and help fix them in their mind. There seems to be no more powerful force in nature than people’s desire to correct grammar and such. I’m trying to harness that force for the metric system by arguing for this convention.

      I looked up hr versus h before I wrote the blog, and the reference I had said either was acceptable. An hour is not an SI unit, only the second is, so I felt that if this was wrong it was but a peccadillo, others apparently don’t see it that way.

      MM

      • The hour is not an SI unit, but is a unit accepted for use with the SI (much like the liter and tonne, or metric ton). It is assigned a symbol in the SI Brochure. I think most of us feel that symbol, h, should be used, and not a random abbreviation although many dictionaries accept hr. You should not use ltr in place of L for liter, and should not use hr in place of h as the symbol for hour.

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