The author describes concepts of measurement as related to such areas as speed, length, mass, and volume. Goodreads reviewer - "It was a long time ago that I read this, but I remember loving it. Asimov starts from everyday objects and then goes by orders of magniture to larger and larger objects and then down to smaller and smaller objects. As I remember he does the same thing with temperatures and speeds and maybe some other quantities."
Science-Math, Experiments-Instruments-Measurement, Measurement,