"Dave" wrote
| I think you got that backward, Bart. A minute of Longitude is always 1 NM.
| That's why you always measure distance by going to the side of the chart
| rather than the top or bottom. It's the length of a minute of latitude that
| varies with what latitude you're at, getting shorter as your latitude
| increases from the equator.


You know, I was thinking the same thing. But then I realized I might not know.
They call them parallels of latitude because they stay the same distance apart.
But the longitude lines get closer and closer together the closer to the north and
south pole they get. At the very north and south pole there's no miles at all between
them. So if that's true then the miles are different on each latitude. They're only
one mile long at the equator. That's why I haven't said a word till now. It's all very
confusing.


Cheers,
Ellen