I hear that 9mm stuff - where is the small stuff.
1mm is big! I know there is .1mm and .01mm

The MKS - basis of a Meter, Killogram, second is for Big stuff.

The cgs - basis of a centimeter, gram, second is for little stuff.

But most people use the MKS and try to measure 'mils' using mm but
it just doesn't make it.

Don't get me wrong, I have a degree in Physics. Metric is a basis math
part used.

Machining just misses something seems to me.

Martin

On 11/30/2010 10:05 AM, Pete C. wrote:

Harold& Susan Vordos wrote:

"Andrew wrote in message
...
Bloody metric measurements - great system, couldn't and wouldn't argue
against it. But.....

Consider this scenario, good people. Ducted heating furnace in the
roof was having a good go at coming through the ceiling (being a
skilled metalworker, and a RCM lurker, I knew straightaway something
was wrong..) Turned out to be crappy install job, vis
1.Vent pipe not sealed properly (so it leaked)
2.Was sitting on a sheet of particle board crap stuff so it rotted
through
3.No drip tray set up for stuff ups.

So. Decided to get a drip tray made, its a metric world, so did it all
in Metric so as to give the order for the tray to the local plumbing
supply place. Measured L by B, added 10mm each side for the folded
lip, and put the order in. Picked it up, thought "Mmmm..."

Seems I had stuffed up the decimal point in my metric calculations -
was 200mm wider than required (length was stuffed too, but that was OK
- was room up in the roof cavity) so, couldnt get the ******* up
through the access hatch into the roof. So, had to cut it down - heaps
of work...

The Moral - I cant think in Metric, cant visualise in Metric, cant
look at metric measurements and think "nah, no way - too wide/long/
narrow thick etc etc"

How you guys cope - bloody sick of doing this...

Andrew VK3BFA.

Metric sucks, and I don't give a damn about the arguments to the contrary.

Those of us that were groomed to work in the Imperial measuring system have
no issues with how it works. I know what a yard is, as well as I know what
a foot is, or one ten thousandth of an inch, for that matter.

As you alluded, when someone makes mention of a size, I have an instant
visual idea of it's general size. Not so with metric, which I must convert
to Imperial in order to get a perspective.

Is it any wonder that the US has resisted the conversion to metric?

Harold

I can visualize metric up to about 9mm or so... after than I have to
convert to imperial to visualize.