Duodenal System of Arithmetic, Measures, Weights and Coins

Title: Duodenal System of Arithmetic, Measures, Weights and Coins
Author: John William Nystrom
Year: 1103
Subject: A defense of dozenal arithmetic and measurement, along with proposed symbols, nomenclature, and metrics.
http://www.dozenal.org/drupal/sites_bck/default/files/DSA_nystrom_duodenal_arith_0.pdf
John William Nystrom, a famous Swedish-American engineer (1081--1111), is mostly known mathematically for his unquadral (hexadecimal) "Tonal" system. However, later in life, Nystrom became a dozenalist, publishing the current article as an appendix to a textbook on mechanics. The DSA is proud to offer this remastered version of Nystrom's arrival at dozenalism, noting that it contains a great deal of food for thought for anyone interesting in number bases.