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From: Phil <phil@anonymous.invalid>
Newsgroups: sci.lang,alt.usage.english
Subject: Re: OT: Converting miles/km
Date: Sat, 21 Sep 2024 15:30:14 +0100
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On 20/09/2024 20:05, Sam Plusnet wrote:
> On 20/09/2024 11:40, Phil wrote:
>> On 20/09/2024 11:10, Bertel Lund Hansen wrote:
>>> Helmut Richter wrote:
>>>
>>>> And easier to remember than 1.609344. But when will you need such 
>>>> precision?
>>>> For instance, when you drive on German roads outside villages, you must
>>>> reduce your speed to 31.0685 mph whereas the rough rule 1 mi = 1.6 
>>>> km would
>>>> have allowed you 31.2500 mph.
>>>
>>> I haven't neede it, but just for fun I have calculated the Danish speed
>>> limits in miles. If you want round firgures, it's:
>>>
>>>          50 km = 30 mi
>>>          80 km = 50 mi
>>>        110 km = 70 mi (2 km too much)
>>>        130 km = 80 mi
>>>
>>
>> I'm not sure how common this is, but the speedometer in my car has 
>> scales for both mph and km/h, so in principle I don't need to convert. 
>> In practice, though, I have the above table in my head, from the old 
>> days. It's easily remembered because the right-hand column corresponds 
>> to the usual preferred values for UK speed limits.
>>
> Also, most modern cars can be persuaded to display speed (digitally) in 
> either mph or kph to suit your current needs.

Ah yes, I was forgetting just how old-school my car is -- it has an 
actual needle moving on a circular scale.


-- 
Phil B