PPRuNe Forums - View Single Post - "Rules of Thumb"
Thread
:
"Rules of Thumb"
View Single Post
6th April 2001 | 13:51
#
15
(
permalink
)
The Nr Fairy
Guest
Posts:
n/a
A real rule of thumb :
On a half-mil chart, your thumb measures roughly 10nm.
It easily follows that a thumb is 5nm on a quarter-mil, and 1nm on a 50thou.