Abstract

The geodetic instruments of the leading firms have so many common basic features that it hardly can be any accident. Obviously this similarity is due to the influence of a man who devoted his life to the development of modern surveying instruments. This man was Dr. Heinrich Wild, from Switzerland (1877–1951). He was a surveyor and carried out triangulation work of all orders, precise levelling measurements and plane-table topographic work. By doing this he learned the difficulties in the instruments available at those times. Through his practical experience in field work he realized that existing geodetic instruments were not designed and constructed to enable the surveyor to work rationally. This led him to improve this equipment, and his success was unique.

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