# Why The Metric System Is So Important

Video: Myanmar, Liberia and the United States of America. Those are the only three countries left in the world that don't use the metric system. Ted-Ed traces the history of the metric system (thank you French Revolution) to show how important it is to have one universal measurement system for the world, what can happen when conversions go wrong (NASA crashing an orbiter into Mars), and what the future of the metric system will be (basing it off universal constants like the speed of light).

# The Evolution Of The Metre

Though you've likely never given it much thought, a universally accepted unit of measurement like the humble metre is an amazing thing. It lets scientists separated by culture, language, race and even thousands of miles of geography work together on equations and problems like they were sitting next to each other. So how did this unit of measurement come to be?

# The Weird Maths Behind Paper Sizes

Despite all the talk of the paperless office, for some reason most of us still seem to drown under piles of dead tree. But while we're all intimately familiar with the stuff, understanding where those weird sizing conventions came from never seems to get any easier.

# The Converted For iOS: A Conversion App That Gives You Context

While this generally goes unsaid, the internet has become a huge crutch — but more than that, we're pretty much blind without it. What do you do when you need to convert meters to feet? Hit a few buttons on your keyboard and bam, Google tells you all you need to know. But the thing is, you're not really gaining anything from having a contextless answer spit at your eyeballs. The Converted can help where Google fails.

# How Much Caffeine Are You Actually Getting In That Cup Of Coffee?

Confession: I don't drink coffee. I know next to nothing about what makes a good cup of brown flavored water other than it involving sniper precision measurements, calculus-level maths, tools that are fit for a serial killer, forearms that would make Popeye jealous and a full beard. What I DO know is that more is always greater than less. So here's a pretty graph showing which coffee shops give you the most caffeine in your coffee.

# This Print Makes Units Of Measure Beautiful

Measurements are something you deal with on a daily basis whether you think about it or not. Either way, ACRE's Units of Measurement print will put these units in the forefront of your mind in a rather lovely manner.

# The Kilogram Is Putting On Weight

There's long been debate over the accuracy of the standardised kilogram. Now, scientists have shown once and for all that the lump of metal defining the unit of mass has been putting on some weight.

# It's Time For The US To Go Metric

The US has a love affair with imperial units: height in inches, milk in quarts, weight in pounds. You name it and it's measured in imperial. The only problem? Imperial is dumb. The US should cast off those shackles and join the rest of the world by embracing units that make sense. It should go metric, once and for all.

# The Kilogram Is Losing Weight And That Might Screw The Metric System

We've long known that there were some issues with France's 'Le Grand K', the international prototype for what a kilogram really is. Made in 1879 from platinum and iridium alloy, it is the perfect standard for what a kilogram weighs. The problem is it's losing weight.

# Measure The Girth Of Anything Using This Tape Measure

Yeh, metal-tape measures stopped being cool right around the time ThinkGeek started selling the Smart String, which has 50 inches of retractable string that can bend around curved things. BUT WAIT! It also tells you the measurements on the LCD screen.

# France's Kilogram Standard Is No Good For Americans

France holds the world's standard for the kilogram weight. It's a cylinder-shaped object that has dictated all other kilogram weights for 130 years now. As it's made from platinum-iridium, though, the US is concerned it's no longer accurate. Whoops?

# Ruler 2: As Good As An iPhone Ruler Can Get

For a device with a 3-inch screen, the iPhone has a pretty impressive resume: phone, map, camera, sketchbook, dedicated Doodle Jump playing machine. And for \$1.19, the newly revamped Ruler 2 app makes it a pretty decent measuring thinger too.

# iPhone 4 CAD Diagrams Will Make Designers Weak At The Knees

Some time ago, Apple uploaded the CAD diagrams for anyone interested in building cases for the iPhone, iPad or iPod. It took Core77 a lot of time and patience to overlay them on the product photos, but they were worth waiting for.

# Useful Towel Knows How Many Pecks Are In A Bushel

A towel is about the most massively useful thing you can have. This particular one though, does things no other towel does: It guides you through the mysteries of measurement conversions and even has built-in rulers.

# Gangster Ruler Allows Measurement Geeks to Save Face

A sad fact of life is that nobody looks tough holding a ruler. But with the Gangster Ruler, \$US12, you can be all like, "what's up now, bitch?"

# Measurement Gloves Give Construction Jobs the Finger

There's never a ruler around when you need one, but these measurement gloves can conceivably clip to your jacket to always have on the job (you know, like mittens).