Significant digits in a float?

[Mark H Harris]

On 4/30/14 10:56 PM, Paul Rubin wrote:

> There is a nice Javascript simulation of the N4-ES here:
>
> http://www.antiquark.com/sliderule/sim/n4es/virtual-n4es.html
>

Thank you!

The N4-ES and the N4-T (mine) are essentially the same rule. The N4-ES 
on the site is yellow (mine is white) and the site rule indicates Picket 
& Eckel Inc. (that's where the E comes from)  Also the the ES states 
Chicage Ill USA where the T states Made in USA.

The only technical difference is the T scale (which is folded-expanded 
on both). On the ES the T scale is listed only once in the margin.  On 
the N4-T the T scale is listed 'twice'!--  once for each part of the 
fold.  Well, that gives (2) scales instead of one --for T...  increasing 
the number of scales on the rule from 34 to 35... if I'm counting right. 
  Which makes the N4-T more valuable... supposedly.  I don't plan are 
parting with it... till I croak, then my son (who is studying 
engineering this fall) will inherit it...  heh   he won't have a clue 
what to do with it !

The simulated rule on the site above is fabulous... especially if viewed 
from a large wide LED.  ... simply fabulouso/    :)



marcus