![]() ![]() A note in the documentation that accompanied the instrument reads “this tachymeter dates from around 1912.” Siegfried Osterwoldt found this instrument in a wooden box in 1940, while he was in the German army travelling through France on the way to the English Channel. Tachymeters are used to obtain distances and to measure bearings and elevations. Manufactured by Kern in Aarau, Switzerland. In 1988, Kern merged with the Wild Leitz group and, in 1991, after over 170 years, the company Kern & Co. Remarkably, five generations of the Kern family stayed involved in managing the company. Kern also produced levels and later expanded into photogrammetry equipment and EDM instruments. He had a remarkable career as a surveyor and designing and producing instruments for Zeiss, Wild and Kern. Heinrich continued designing up until his death in 1951. The DKM1, DKM2, and DKM3 were meant to be competitors of the Wild T1, T2 and T3, respectively. The character “M” indicates that the theodolite is equipped with a micrometer. The characters “DK” in the model name indicates that it is a Doppelkreis (double-circle) theodolite. With Kern, he designed the DK2, DKM1, the DKM2 and DKM3 theodolites. With Heinrich’s help, Kern once again became one of the largest manufacturers of surveying instruments worldwide. While working with Kern, Heinrich applied his knowledge designing instruments to compete with those produced by the Wild company. Heinrich had left Wild, the company he founded, in 1932 - he cared little about the business side of the company and wanted to be able to work as a freelance designer and inventor. The beginning of a new era for Kern began in 1937 when Heinrich Wild started working for the company. The company grew steadily over the years, however after the First World War a poor economy and competition from the Wild company led to business difficulties. The first theodolite was produced in 1824. ![]() Jakob Kern initially produced drawing instruments. was founded in 1819 by Jakob Kern in Aarau, Switzerland. This is the thirteenth in a series of articles about objects in the Alberta Land Surveyors’ Association historical survey artifact collection. Legislation, Standards and Essential Resources.Reinstatement as an Alberta Land Surveyor.Land Surveyors already licensed outside of Canada.Land Surveyors already licensed in Canada.Registration as an Alberta Land Surveyor. ![]()
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