Publishing house R. Keller at the trade fair (Throwback 1982)
In 1982, Mrs. Keller published the first workbooks written by her husband, Siegfried Keller, under the publishing name ‘R. Keller’. At that time, he was still a teacher of metal technology. The workbooks covered topics such as CNC machine tools, as well as geometrical, technological, and mathematical fundamentals. Our current SYMplus™ workbooks are essentially a modern evolution of these original educational materials.
The success of these workbooks eventually led to the founding of R. & S. KELLER GmbH by Mr. and Mrs. Keller in 1986. The photo shows the publishing company’s booth at a trade fair.
Discover more about our history on our website: https://cnc-keller.com/history/
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