13.08.2015 - 00:00 Uhr
KirchenthumbachOberpfalz

Mit ihnen war zu rechnen

Rechnen ohne Strom - vor der Erfindung des Taschenrechners ging das nicht anders. Um sich das Addieren, Subtrahieren oder Teilen dennoch zu erleichtern, waren andere Hilfsmittel gefragt. Die Rechenscheibe war eines davon. Deren Spur führt auch nach Kirchenthumbach.

Helma Tröger (von links), Ehemann Volkmar und Schwägerin Erika Tröger sehen sich die Überreste der ehemaligen Werkstatt Hans Trögers durch. Dessen Vater Karl Emil Tröger hat die Rechenscheibe erfunden. Nach dem Zweiten Weltkrieg ließ sich Hans Tröger in Kirchenthumbach nieder und stellte mit Familienmitgliedern die Rechenhilfen her. Die gingen in die ganze Welt. Bilder: esc (3)
von Redaktion OnetzProfil

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