On Sunday, November 2, 2014, Bill Webber  wrote:

>
> http://billwebber.g
alootcentral.com/side%203.JPG
> http://billwebber.g
alootcentral.com/side%203.JPG
>
> At first glance I thought the scale on the inside (Side 3 and 4 above) was
> a metric scale, but obviously it is not.  This inside scale is linear and
> contains 112 divisions in 35 1/2 inches.


 112/35.5 = 3.14.....


Thus I suspect something for deciphering circumference based on diameter.

Kirk in HMB, CA, who really should be doing yard work, or garage cleanup,
or something more productive than attempting a nap


-- 
Sent from my iPad, apologies for the Auto Correct errors.
Kirk