How Do We Measure? — Body Parts as Units
Before standard measuring instruments were invented, people often used body parts to measure length.
Common body-part units
- Finger width – The width of one finger was used to measure small lengths.
- Handspan – The distance between the tip of the thumb and the tip of the little finger when the hand is stretched.
- Cubit – The distance from the elbow to the tip of the middle finger.
- Foot – The length of a person’s foot.
- Pace/Step – The distance covered by one normal step.
- Stride: Distance covered in one complete step cycle, usually from one foot to the same foot again.
Ancient Indian Units of Measurement:-
Ancient Indians used different units to measure length and distance. Some were based on body parts, while others were standardized for trade, construction, and travel.
Dhanusa: A larger unit of length associated with the length of a bow.
Yojana: A large unit used to measure long distances, especially for journeys.
Harappan Scales: The people of the Indus Valley/Harappan Civilization used carefully marked measuring scales, showing that they had an organized system of measurement.
Angula: An ancient Indian unit of length based on the width of a finger.
Standard Units of Length:
Standard units are fixed units of measurement that are accepted and used everywhere. They help us get the same measurement regardless of who measures.
Common Units of Length: Millimetre (mm), Centimetre (cm), meter (m) , Kilometre (km) etc.
Conversions
1 cm = 10 mm
1 m = 100 cm = 1,000 mm
1 km = 1,000 m
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