5.5 Dietzgen, USA

Chicago-based Dietzgen was founded by in 1885 when Eugene Dietzgen and Otto Luhring formed Luhring & Dietzgen to sell and promote engineering supplies. Dietzgen acquired materials from outside sources, primarily from Germany, but typically manufactured their products in Chicago. Still in business today, Dietzgen ceased making slide rules in about 1972, but was creating fine instruments in competition with K&E, Pickett, and Post/Hemmi.

Dietzgen 1761-AL.

Dietzgen 1767.

Dietzgen 1734.

Total number of Dietzgen slide rules in the collection: 20.

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