On Oct 8, 9:15*pm, Wayne.B wrote:
On Wed, 8 Oct 2008 10:17:50 -0700 (PDT), "
How do you calculate great circle distances with dividers ?

Plot the LL's on a gnomic chart?

That might work as a piece-wise approximation.

Sorry, I know that wasn't a very helpful idea. Since a straight line
on a gnomic chart is a great circle if you just count the number of
degrees along the line that should provide naut miles. I'm not sure
how helpful dividers would be in measuring those degrees. I'm also
not sure if they make gnomic charts to a scale appropriate for
plotting such short distances. What would be the point?

--Tom.