Gustav Bruemmer (or Brümmer; April 23, 1905 – July 4, 1970) was a German

watchmaker A watchmaker is an artisan who makes and repairs watches. Since a majority of watches are now factory-made, most modern watchmakers only repair watches. However, originally they were master craftsmen who built watches, including all their par ...

and headmaster at the watchmaking school in

Hamburg Hamburg (, ; ), officially the Free and Hanseatic City of Hamburg,. is the List of cities in Germany by population, second-largest city in Germany after Berlin and List of cities in the European Union by population within city limits, 7th-lar ...

Biography

Bruemmer was born on April 23, 1905, in

Kiel Kiel ( ; ) is the capital and most populous city in the northern Germany, German state of Schleswig-Holstein. With a population of around 250,000, it is Germany's largest city on the Baltic Sea. It is located on the Kieler Förde inlet of the Ba ...

. He left school in 1920, having acquired the O-level qualification. He learned the craft of watchmaking in

Glashütte Glashütte [] is a town in Saxony, Germany, known as the birthplace of the German watchmaking industry and has a population of about 7,000. Historically, it was first mentioned in a document circa 1445. In January 2008, the former municipality Re ...

and took the trade test in 1924. His test work is now exhibited in the Museum of the School of Watchmaking in Glashuette. From 1927 to 1929, he attended the German School of Watchmaking Bruemmer Glashuette. He studied at the Vocational Teacher Training Institute and the Graduate School of

Berlin Berlin ( ; ) is the Capital of Germany, capital and largest city of Germany, by both area and List of cities in Germany by population, population. With 3.7 million inhabitants, it has the List of cities in the European Union by population withi ...

. From 1931 to 1933, he trained as a commercial teacher. In his thesis he wrote about "Vocational education in watchmaking." In 1933, he had a practical educational year at the trade school in Lokstedt-Niendorf. In 1934, he took on various teaching assignments in Hamburg and married his wife Gertrude in the same year. From 1 April 1936, he was a fully employed teacher at the vocational school in Lokstedt-Niendorf. The monthly salary amount was then 236.37 Reichsmark. In 1940, he started as a teacher in the state sector School of Watchmaking

Altona, Hamburg Altona (), also called Hamburg-Altona, is the westernmost Boroughs and quarters of Hamburg#Boroughs, urban borough (''Bezirk'') of the Germany, German States of Germany, city state of Hamburg. Located on the right bank of the Elbe river, Alton ...

. In 1944, he became a commercial senior teacher at the same school. Since that time, he wrote many technical articles for the journal "The Clock" (organ of the Central Association of the Watchmaker). In 1952, he published the still-used book "Applied Mathematics for Watchmakers" as the third edition of the textbook series "The Watchmaking School" of the publisher Hermann Brinkmann with the cooperation of the State School of Watchmaking in Altona and the "Central Association of the Watchmaker". In 1958, he was technical director at the state school for watchmakers in Hamburg-Altona, until he retired in 1968. Bruemmer died of kidney failure many years after.

Writings (selection)

:Applied mathematics for watchmakers. William Knapp Verlag. 15 editions. . :A look at the gear train. The clock, 1949, No.6, p.3 :Half of vibrations, oscillations and vibrations double. The clock, 1949, No. 8, p.7 :The module - a useful computational size. The clock, 1949, No.12, p.8 :The counter ratchet, an auxiliary drive for watches. The clock, 1950, No.12, p.21 :Of development and construction of the free escapement. The clock, 1951, No. 2, 4, 6, 8 :Of structure and adjustment of the Graham escapement. The clock, 1951, No.18, 20 22, :Ferdinand Adolph Lange - founder of the Glashütte watchmaking. The clock, 1953, No.4, p.33 :Of the unrest. The clock, 1954, No.22, p.34 :Of the cylinder escapement. The clock, 1955, No.10, p.31

References

# ↑ 125 years of watchmaking school in Hamburg, classical watches, No.4, 2003, (PDF). Accessed 2 February 2013. # ↑ Glossary of products by 1948 - 1982. Magazine "The Clock" in German Society for chronometry, (XLS). Accessed 6 February 2013. {{DEFAULTSORT:Bruemmer, Gustav 1905 births 1970 deaths German watchmakers (people) German educational theorists