GrabCAD USA

This is only length measure ))

1 kilometer = 1000 meters

*kilo means 10^3

1 Kilogram = 1000 grams (the same idea)

That's lovely but that was NOT my question

A kilometer (km) is a unit of measurement of distance in the metric system. The metric system is decimal, which means that conversions between units (e.g., from kilometers to meters) are very straightforward and logical.

A measurement system that includes miles, feet, yards, etc., is not decimal. This can lead to complexities in converting between units.

In larger measurements, such as geodetic or astronomical measurements, the metric system is typically much more precise.

Frequently using different units of measurement can lead to misunderstandings and errors.

In some scientific and technological fields where precision and universality are essential, using English units can be inconvenient.

And what also annoys me is having a whole mountain of expensive tools and measuring instruments in the imperial system of units. Switch to the metric system already, it's getting tiresome!

No reason to switch. Computers and specifically CAD work all day long in mixed units. Doing conversions for you. In the end it's just a number. A number that is output on a drawing or in CAM headed for a machine.

I work every day in mixed units. It involves the most simple math. With CAD systems like they are I never get an error due to which units I use. It's such simple math that if you can't handle it, I suggest you're in the wrong field of work.

Many components are available in metric units. It's also a fact of life that many components in the USA and some other countries are still measured using imperial units. That won't change for many more decades. The worst thing I ever have to deal with is documentation for components designed in imperial units that some well meaning but ignorant person has converted to metric units. The rounding errors will get you every time. Rule: If you have something designed and built in imperial units then leave it that way. Same for metric components.

A kilometer is just a unit of measure. Like a mile, it has a specific fixed length. I ran a 5K this morning. My GPS watch reports it as 3.1 miles. I'll take it either way.

BTW: It annoys me when someone states the metric system is "more precise". You need to learn the definition of precision. And accuracy. What units are chosen essentially has nothing to do with it.

Everyone knows that metric is more scientific. You can tell because the meter is based off of a wrong estimation of the size of the earth. Wait, no, it's based off of a bar in France. A bar in France isn't scientific anymore? Fine. It's based off the distance light travels one direction (which you can't measure) in a certain amount of time (that is defined by the unit of measurement that you are defining). The kilogram is also scientific because it's based off of a volume of pure water (which you can't make) at an arbitrary pressure and temperature. Everyone knows it's trivial to build a watertight box that's perfectly square and smooth and the right size to within the thickness of a hair. Be sure to measure in mass - how unscientific it would be of you to measure a wooden chair assuming it's going to be used on planet earth.

Everyone knows that the imperial system is unscientific and hard to use. What silly person would have their main unit of measurement use the smallest number that you can factor into the most fractions conveniently? Don't even get me started on the mile which is just so silly. What? It used to be 5000 feet and was changed to squeeze taxes out of people? No matter. The nautical mile is even worse - it's also based off an incorrect estimate of the size of the earth just like the meter. 6000 feet or 2000 yards or 1000 fathoms? How inconvenient. Let's change it so that it's not easy to use anymore, and then baulk at how silly it is after the change. And thousandths of an inch, that sounds inconvenient, what machinist would count in "thou" when they can count in "quarter tenths of a millimeterththsnths" instead?

I'm joking of course - I use both measurement systems fluently and sometimes side by side. If you're sending something to a US shop it's a lot more convenient for you endmills to be imperial sizes. And some projects just make more intuitive sense in inches, where as small projects are just better suited to the additional simplicity of millimeters instead of breaking out the 1/64th fractionals. Leave the rest for the precision measurement nerds and the gauge block makers, although it is rather amusing to see people try to call one or the other measurement system "better" when they've never used anything more complicated than a ruler in their lives.

Hey, if you're going to talk about imperial or American standards of measurement, you cannot forget about the "slug". According to Wikipedia, the "slug is defined as a mass that is accelerated by 1 ft/s 2 when a net force of one pound (lbf) is exerted on it. One slug is a mass equal to 32.1740 lb (14.59390 kg) based on standard gravity."

Btw, this comment was meant as sarcasm.

I thought "beating dead horses" was illegal in the UK?

Millimeters... Invented by the french to make their penises sound more impressive... ;)~

What the flippity flop are you blabbing about

derp

Girl what

Lord Elcho?