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Interesting!
So the American artillerists sacrifice the ease of calculation
to higher precision.
A

Alex Eremenko
Department of Mathematics
Purdue University
West Lafayette IN 47907-2067

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On Fri, 7 Apr 2006, Royer, Doug wrote:

>
> Alex wrote:
> And the compass ("bussole" in Soviet artillery,
> but compass in the Soviet Navy)
> was divided into 60 parts, correct?
>
> Do US and British Armies use degrees?
> A.
>
> On Fri, 7 Apr 2006, jean-philippe planas wrote:
>
> > The French artillery (and infantry)
> > uses division called "thousandth" (milli?me") as well. "One Thousandth"
> > is the angle of an object one meter high seen from a 1000m (1 km
> > distance) with the same conclusions as Alex.
> >   JPP
>
> In the US military (land forces at least) a recruit is trained for land nav
> using compasses/optics that are graduated in degrees and mils.
> In the US equipment there are 6400 mils to 360 degrees. And on long range
> optics (rifle scopes, arty optics etc) there are markings on the horizontal
> and vertical stadia for range finding. These markings (round dots) are 1 mil
> in diam. Because 1 mil subtends a certain area at certain ranges these
> optics give good results in range finding.
> I had a Russian (Soviet actually) compass a few years ago. It, as you
> stated, was marked in 6,000 units instead of the 6,400 units I was used to
> using. It was confusing as I always had to think about the difference when
> using it instead of just using the equipment. I got rid of the Soviet
> compass. Not because of inferior quality of the compass but I am comfortable
> using 6400 mils to a circle.
>

   

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