AusNav #1 - True North, Grid North, Magnetic North and Magnetic Variation
6:21
AusNav #2 - Compass Deviation and Swinging the Compass
18:05
Compass Navigation Tutorial
19:52
Magnetic Declination Demystified
9:16
The Compass: True North vs Magnetic North
20:59
Comment les agriculteurs américains récoltent 374 millions de livres de framboises à la machine |...
11:39
Africa’s Self-Powered Car Invention: Who’s Silencing the Genius Behind It?
8:29
Orienting a Map and Compass
13:07