Sun Watch - - - - Wearable sundial pendant watch is a modern twist on an ancient time piece . Uses the changing angle between sun and horizon to estimate the time . Note: Calibrated to work best at a latitude close to 40 degrees north . (Made by Shepherd's Watch)
The Ultimate Guide to Using a Compass - At first glance, using a compass doesn’t seem that hard, just hold it flat and it will point you to the North. But little do most people know, that’s only half the battle.