From J C WELCH
I have been a bit late in reading your correspondence on how to find
north or south using a wrist watch, as New Scientist has a fairly long distribution
list in the Royal New Zealand Air Force. However, with reference to locating
south (in your case north) with a digital watch (‘Digital manoeuvres’, Letters,
10 February 1990), the method is to whirl t around your head and let it
go, in which case it has gone west. A simple 90 degree turn in the appropriate
direction gives north or south.
J. C. Welch Blenheim, New Zealand
