Object Details maker Pickett Industries Description This duplex aluminum linear slide rule is coated in yellow ("eye saver") plastic and is held together with stamped aluminum contoured posts. The ...

Description Maurice Hartung of the University of Chicago wrote this sixty-four page booklet to explain the use of Pickett slide rules with model numbers N3ES, N803ES, and N800ES.It was published by ...

This article was originally published with the title “Rotary Board and Log Rule, and Measure” in Scientific American Magazine Vol. 5 No. 44 (July 1850), p. 345 doi:10.1038 ...