The DSA is a voluntary, nonprofit education
corporation, organized for the conduct of
research and education of the public in the
use of dozenal (also called duodecimal or
base-twelve) in calculations, mathematics,
weights and measures, and other branches of
pure and applied science.
Here, we have Kodegadulo's Primel Zoom, a
fantastic romp through the universe from the Planck length
to the scale of the whole kit-and-kaboodle. Scientifically
interesting, and a great way to get an idea of the scales of
the Primel and TGM metric systems.