[RVRC] Interesting

[Prof Bob Hopkins]

Well,
It is only accurate to three significant figures, but it needs no wall 
wart to recharge it, and usually will still function if you spill beer 
all over it.  And was used in the design and construction of most major 
engineering marvels before 1960.  I still show the future engineers how 
to use one of these things.  Not that they really do anymore.
73,
bob
wb2udc

On 6/13/2011 11:23 AM, Bryan D. Boyle wrote:
> For those who understand, no explanation is needed...for those who
> don't, none will be given...<grin>
>
> http://www.antiquark.com/sliderule/sim/n4es/virtual-n4es.html
>