[Magdalen] Rods, knots and chains, oh my!

[Jay Weigel]

Still used nautically too. We used it in sailing.

On Sun, Jul 31, 2016 at 4:49 AM, Roger Stokes <roger.stokes65 at btinternet.com
> wrote:

> On 30/07/2016 22:55, Lynn Ronkainen wrote:
>
>> https://en.m.wikipedia.org/wiki/Rod_(unit)
>>
>
> I'd forgotten about the knot which is a unit of speed still used in
> aviation.  It is 1 nautical mile per hour, a nautical mile being the
> distance represented by 1 minute (1/60 of a degree) of longitude at the
> Equator, acrually defined now as 5,080 ft.  Using knots as a speed
> indication for aircraft means that you are being neutral, using neither the
> imperial nor the metric measure of speed.
>
> Roger
>