File under: Language, Reflections

Towards a universal theory of measurement

You know when someone goes to the doctor in a movie, or in real life, and s/he looks gravely at the nervous patient and tells them he’s got some bad news and then describes the size of it and it’s always the size of a soft fruit. And as with tumours, cysts and other noxious swellings, so with babies.

And then when certain news organisations write stories about deforestation, oil slicks or similar, they compare the rate of loss with leisure facilities, principalities, or small nations.

The thing about all of these things is that they are universal. An apple is an apple is an apple. Everyone knows how big an elephant is. All of these things have a human scale, and can be imagined at will, to make a relevant comparison or to describe something else.

With that in mind, I’ve been trying to come up with a scale for the universal units of measurement (used for everything from foetus growth to tumours to deforestation). These are all things I’ve heard used as a relative size for things, but I’m sure it’s not exhaustive: Please add your own, if you know of others.

  • Grain of sand
  • Human hair
  • Pea
  • Fingernail
  • Walnut
  • Golf ball
  • Kiwi fruit
  • Apricot
  • Avocado
  • Fist
  • Tennis ball
  • Credit card
  • Can of Coke
  • Pack of cigarettes/Pack of playing cards (in these more enlightened times)
  • Grapefruit
  • Honeydew melon
  • Paperback book
  • Brick
  • Football/Bowling ball
  • Hardback book
  • Watermelon
  • Shoebox
  • (big gap)

  • Big dog
  • Cow
  • Family car
  • Garden shed
  • Elephant
  • Double-decker bus
  • Nelson’s column
  • Football field
  • Isle of Wight
  • Mount Everest
  • Wales
  • Belgium
  • France
  • Texas

If you don’t know what I’m talking about, trying saying the words “..about the size of a…” in front of any of the above.

(your suggestions and other late additions are in italics)

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