[AT] Supposedly why our old tractors are not metric and a fairly simple tutorial

[Stephen Offiler]

Maybe that would be easier if we had metric minutes and seconds...


On Mon, Feb 24, 2020 at 5:58 PM Cecil Bearden <crbearden at copper.net> wrote:

> It is bad enough converting degrees minutes and seconds into decimal
> degrees!!
> Cecil
> On 2/24/2020 4:23 PM, Stephen Offiler wrote:
>
> I haven't see Mark's message yet, but I just saw Cecil's reply.  Yes, I am
> aware of that (not the cornbread!).  In fact, most scientific calculators
> have a "D-R-G" button that puts the calc into either degree mode, radian
> mode, or grad mode.  A grad is 1/400 of a circle.  I must admit I wasn't
> recognizing this as quite metric.  But Mark is right - it would be a metric
> right triangle with 100 divisions.  I have never encountered the actual use
> of grads anywhere outside an obscure trigonometry class once upon a time.
> So I still submit that in practice neither the circle nor time are metric.
>
> SO
>
>
> On Mon, Feb 24, 2020 at 4:43 PM Cecil Bearden <crbearden at copper.net>
> wrote:
>
>> Does this mean that we use cornbread for a factor instead of PI?
>> Cecil
>> On 2/24/2020 2:09 PM, Mark Johnson wrote:
>>
>> There is an 'alternative' degree system where a full circle is 400
>> degrees and a right angle is thus 100 degrees instead of 90. I haven't
>> played with the math implications, but it seems logical that all triangles
>> in such a system would have angles adding up to 200 degrees.
>>
>> The trig tables would look a bit strange at first but I think all the
>> identities will work regardless of the metric.
>>
>> Mark J
>>
>> ------------------------------
>> *From: *"Stephen Offiler" <soffiler at gmail.com> <soffiler at gmail.com>
>> *To: *"Antique Tractor Email Discussion Group"
>> <at at lists.antique-tractor.com> <at at lists.antique-tractor.com>
>> *Sent: *Monday, February 24, 2020 8:32:41 AM
>> *Subject: *Re: [AT] Supposedly why our old tractors are not metric and a
>> fairly simple tutorial
>>
>> Metric time?  Say 10 metric hours per day, 100 metric minutes per hour...
>> why don't we do that?
>> Metric circles?  Why not divide into 100, or 1000 parts rather than 360?
>>
>> SO
>>
>> On Mon, Feb 24, 2020 at 9:09 AM Indiana Robinson <robinson46176 at gmail.com>
>> wrote:
>>
>>> I'm not sure how accurate this story is but it matches what I had read
>>> for years.
>>> https://www.thevintagenews.com/2018/04/12/metric-system-usa/
>>>
>>> If they had listened to Jefferson we would  not be messing with a double
>>> system, metrics would just be what we use...  The 10 based system can be
>>> done in  your head (could have saved all those years learning those damned
>>> fractions)  :-)  and every tool box wouldn't have a fraction to decimal
>>> conversion chart tucked in somewhere that you can't ever find when you need
>>> it. Also we would not have to worry about some dead kings thumb size
>>> getting lost or a bad few years for the barley crop or a lot of other stuff
>>> they tried to set as standards long ago.
>>>
>>> This site looks fairly well done and I liked the little section on the
>>> metric size of a few common objects.
>>>
>>> https://www.wikihow.com/Measure-Centimeters?fbclid=IwAR1z77b9GTGRpTD7TM1cH51LA1CKzsTyPJ-n87HsRDmbJv7b5ME7QyCVpbs
>>>
>>> If you have forgotten how to use your Abacus there is a section on that
>>> too.  :-)
>>>
>>>
>>> .
>>>
>>> --
>>> --
>>>
>>> Francis Robinson
>>> aka "farmer"
>>> Central Indiana USA
>>> robinson46176 at gmail.com
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
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>>>
>>
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