Metric vs. other measurement systems - chart

[marksbug]

I worked at a aero space& prototype shop....after a few months you realize just how stupid some engineers are...and yes some tolerances can be hard o obtain..you need a neek to do it most of the time.

[FEM2008]

I worked at a aero space& prototype shop....after a few months you realize just how stupid some engineers are...and yes some tolerances can be hard o obtain..you need a neek to do it most of the time.

If it takes a neek to successfully machine the tight tolerances, then I would call that a compliment.

I am an engineer, twice over. I worked on a variety of positions and projects, for everything from the air-force to designing products used by the largest primary metals companies in the world. Tight tolerances are sometimes truly required.
What I have often encountered foundries and shops that cannot meet even very generous industry standard tolerances that have been established decades ago. Some shops could not even meet their own tolerances.

It goes both ways!!!

[Jon]

Asteroid that is "twice the size of Taj Mahal". This one slightly redeems itself by accompanying it with actual measurements.

[Toolmaker51]

Asteroid that is "twice the size of Taj Mahal". This one slightly redeems itself by accompanying it with actual measurements.

So, where do we get the mysterious catalog of comparative measurements? I'd first want to see its method of indexing. Can't get my head around knowing the size of something, then figuring what it equals, or how many needed.
Meanwhile, yours truly is indexing his library, oh yes I am! So far, it's 4 pages thick.......in excel.

[mklotz]

According to Wikipedia, the Taj is 240' high (height being the only dimension given)

480' = 146+ meters

which is very close to 175 for large values of 146

Given that its mass is the relevant figure in evaluating an impact, it would make more sense to estimate its volume...

V = (4/3)*pi*(175/2)^3 / 2500 (m^3 per olympic swimming pool) = 1122+ olympic swimming pools

There, that's better, now it's expressed in a way the social ecology majors can comprehend.

[marksbug]

as in today today?? I dont see it

[Toolmaker51]

1122 Olympic pools?
I want that pump station contract.

[NortonDommi]

Fun fact for anyone interested. Old Massey Ferguson tractors use decimal inches for all the chassis and running gear measurements. Threw me for a loop making some ROPS for a friend who collects them. I am used to swapping between Imperial fractions and Metrickery in anything over an inch but had forgotten about decimal inches and had to go and consult a beer to figure out what these weird measurements I was getting were.

[bruce.desertrat]

Lol. Many years ago I picked up a 50' cloth rule for a buck at a yard sale.It was just the rule, no housing or winder. Never looked at it too closely, it got stuck in the back of the toolbox for times when my normal 25' tape rule wasn't big enough. Fast forward a few years, we buy a house and start measuring rooms, switching between the metal tape rule and the longer cloth rule, again, without closely examining it.

We couldn't understand why measurements kept coming up weird until I looked more closely at the cloth rule....it was graduated in tenths of a foot, not inches...

[mwmkravchenko]

Lol. Many years ago I picked up a 50' cloth rule for a buck at a yard sale.It was just the rule, no housing or winder. Never looked at it too closely, it got stuck in the back of the toolbox for times when my normal 25' tape rule wasn't big enough. Fast forward a few years, we buy a house and start measuring rooms, switching between the metal tape rule and the longer cloth rule, again, without closely examining it.

We couldn't understand why measurements kept coming up weird until I looked more closely at the cloth rule....it was graduated in tenths of a foot, not inches...

Probably for surveying.