Signed copy. Genius of the Tellurometer - Trevor Lloyd Wadley

SIGNED by Mary Wadley von Hirschberg

2009. Soft cover, 112 pages. Very good condition; neat and clean. Under 1kg.

This is the story of how in 1954, on the tip of Africa, a young eccentric genius invented a quick and easy way of measuring land, a feat that had been attempted for years and at great expense by the major countries of the world without success.

 It describes how the strategic position of South Africa during World War 2 promoted the flowering of an electronics industry in a predominately mining and agricultural country, and how the largely unheralded work of the Special Signals Services in South Africa had to be kept secret even from its members."