Average administrative tablet

Photo from Wikimedia Commons
Cuneiform Tablet (Typical)
The clay tablets of ancient Mesopotamia bearing humanity's first writing/Historical
Cuneiform is one of the earliest known writing systems, developed by the Sumerians around 3400 BC in Mesopotamia (modern Iraq). The writing was produced by pressing a reed stylus into soft clay tablets, creating distinctive wedge-shaped marks (cuneus means 'wedge' in Latin). A typical administrative tablet was roughly 5-10 cm across, though tablets ranged from tiny 2 cm tags to large 30 cm literary works. Over 500,000 cuneiform tablets have been excavated, covering everything from temple receipts to the Epic of Gilgamesh, the oldest known work of literature.
Measurements
Average tablet size
Pressed clay
Fired clay average
Individual cuneiform wedge marks
Reed writing implement