Handbuch der Masse, Zahlen, Gewichte und der Zeitrechnung

An introduction to the development of measurement and measurement systems from prehistoric times to the present: This volume explains the International System of Units (SI) but also notes units outside of this system, from the Öchsle degree to wind force. It provides chronologically and geographically organized tables of old units of length, area, volume, and weight, discusses the evolution of numbers, and explains symbols, from astrological-alchemical signs to pictograms and traffic signs. For this sixth edition, the previously available hardcover volume has been thoroughly revised and updated.