Clock Graph | University of Illinois Archives
Drawing of a circular graph with roman numerals in the hour positions of a clock, and a smaller circle showing some of the minute positions of a clock.
Found in RS: 39/2/22, Box 102, Envelope 20,808
This image has been scanned from the lantern slide.
Original slide measures 10.3 cm W X 8.3 cm H
University of Illinois Archives
E. Swanson 2/2010
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