Notes: """System Schumacher.""See article J. Oughtred Soc. 13(2), p. 10, 2004: von Jezierski et al., ""A. W. Faber model 366 - system Schumacher: A very unusual slide rule"". Honestly, I was a math major in college, but I still haven't figured out what this slide rule does. Give me more time..."
