Question

Before the modern era, what was commonly used as a measurement standard?

विकल्प

• Atomic clocks

• Platinum-iridium cylinders

• Body parts like foot, hand span, and cubit

• Speed of light

Answer 1

Body parts like foot, hand span, and cubit

Explanation:

Before the 1800s, people used body parts and local rulers' measurements, causing confusion in trade and science. This led to the need for universal, standard units.