Other Modern Usages
The basic Petra Sancta system was adopted in the modern world by industrial engineers as a standard system of colors and hatch patterns for use in planning factories and material handling systems.
Read more about this topic: Hatching System
Famous quotes containing the word modern:
“If you look at the 150 years of modern China’s history since the Opium Wars, then you can’t avoid the conclusion that the last 15 years are the best 15 years in China’s modern history.”
—J. Stapleton Roy (b. 1935)