The first standardized weights and measures emerged around 3000 BCE in Mesopotamia (modern-day Iraq). The Sumerians and later the Babylonians developed remarkably precise systems to regulate trade, taxation, and construction.

• Weights: They used standardized stone and metal weights based on the mina and shekel systems. One mina equalled 60 shekels — a base-60 counting system that still echoes in how we measure time (60 seconds, 60 minutes).

• Measures: They also created standardized lengths such as the cubit, originally derived from the length of a forearm, and volume measures for grain and oil.

• Artifacts: Archaeologists have found carefully carved balance weights in Mesopotamian ruins and inscribed clay tablets recording trade transactions — essentially early legal standards of measurement.

The concept spread rapidly:

• Indus Valley (Harappans) had their own finely calibrated cubical stone weights — often more uniform than Mesopotamia’s.

• Ancient Egypt refined cubits for monumental building (the Great Pyramid is accurate to within millimetres!).

• China and Greece later formalized state-regulated systems.