Michael Gleim (mike@mgleim.COM)
Sun, 12 Apr 1998 14:36:25 -0700
JO ERNST ASKED:
Date: Sat, 11 Apr 1998 21:28:50 -0400
From: Jo Ernst <njernst@LOGICSOUTH.COM>
My troop has some sheets of "Distance Computers." These are xeroxed sheets
of paper with two parts to be cut out and put together with a prong
fastener which you use to convert feet and meters to paces and vice versa.
The instruction sheet "How To Use the Distance Computer" has the page
number 574 at the bottom. Where did this come from? The copies I have are
terrible. Is this on the net somewhere? What book can I find this in?
The book seems to be about 7" x 10" in size. I would go into CorelDraw and
make these; however, the lines are not all spaced alike. Please help.
I don't know what book they're from (maybe an old POW WOW / University of
Scouting handout), but the principle is simply a specialized application of
logarithmic scales as used on slide rules. The various "computers" I've
seen ("Distance", "Attendance", etc.) have all been based on circular slide
rules. All you are really doing is using the C and D scales to multiply and
divide (adding and subtracting logarithms).
I haven't searched the Internet, but there may be a page out there with a
simple circular slide rule on it. All you need to do is learn to multiply
and divide with it, and you could use it for any number of quick calcs.
On the other hand, you can do the same thing with a handheld calculator.
There are plenty on the market (and given away as promo items), even light
powered ones. The development of the handheld calculator is what pushed
slide rules off the market (although I still have my old ones).
Mike Gleim, UC
Golden Gate District, San Francisco Bay Area Council
Terry Howerton Sakima Group, Inc. SCOUTER Magazine Kansas City