On 2/13/2012 11:05 PM, Richard wrote:
On 2/13/2012 9:56 PM, wrote:
On Mon, 13 Feb 2012 21:31:57 -0600,
wrote:

On 2/13/2012 9:06 PM, Larry Jaques wrote:
On Mon, 13 Feb 2012 20:04:32 -0500,
wrote:


wrote in message
...
I want SAE on both edges of the tape.

SAE?

Society of automotive engineers, what kind of measurement is that?

So... having stopped by the local Ace Hardware to pick up a tape
for a
friend, wasn't I surprised to find a basic tape (25' Ace brand) -
just
1/16"

Oh! You're talking about feet and inches. You mean /imperial/ units!


Then you have something called "BobsRule" which is in units called
"bobs"
(whatever they are):

http://www.whitechapel-ltd.com/hardw...bobsrule.shtml

LoREENA Bobbit made up her own rule.

I've been known to use both sides of the tape while measuring. This
board's 61-5/8", that one is 123mm.



I'm getting there.

But what is 0.525mm easier than 3/8" ?
It's not. But when DESIGNING in metric, everything is done in tens or
tenths, hunreds or hundredths. So 1MM is .01CM, none of the silly 12
inches to a foot, 3 feet to a yard, 36 inches to a yard etc, and none
of the .125 inches to the 1/8 inch. You design to the .1meter or
.01meter, or 12.5mm or whatever and never need to convert by anything
more complicated than moving decimal points to convert from one unit
to another.


Ok, but why would I WANT TO do that???
It's damned difficult to eyeball 2 mm vs 3,
But dividing spaces into successive halves is easy.
I can reliably estimate 3/23" Half way between 1/16 and 1/8.

Call them silly if you want, but I'm not buying it as long as Greenwich
runs on base 60/60/24/30,31,29or maybe 29.

Although I have to admit getting away from
pounds/shillings/pence/ha'pennies was a good idea. Shame it's not
working so well.




AND! Even the type is so obvious anybody would catch it.
That's not so obvious in mm.