Re: How to measure the markings on the slide rule? A, B, C, and D Scale.
--- In
slideruleforum@yahoogroups.com, "Dale Price"
<price.family@...> wrote:
>
> As an end of the year assignment my high school students are making
> their own slide rules. Most will use a simple ABCD scale that I give
> them and build one out of cardboard. Some go above and beyond.
> One of those wants to use a CNC machine to engrave the markings in
Lexan.
> Does anybody have some information on how far apart the markings are
> on these 4 scales?
>
The "base" scales (A B and C D) are logarithmic, so you can use
simple log tables (to any base, but 10 is the most usual).
For example, random Googling comes up with:-
http://www.sosmath.com/tables/logtable/logtable.html
Regards, Jerry McCarthy, U.K.
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