This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Slide rule for turning work. Slide rule created by Carl Barth coworker of Frederick Taylor for turning work about Rechenschieber fr Dreharbeiten entwickelt von Frederick Taylors Mitarbeiter dem Mathematiker Carl Barth um Hebeisen Walter Taylor und der Taylorismus ber das Wirken und die Lehre Taylors und die Kritik am Taylorismus