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Long Cubit


The long cubit is an ancient unit of length that is a variation of the standard cubit, measuring from the elbow to the tip of the middle finger. The long cubit is longer than the common cubit, typically about 21 inches (approximately 53 centimeters).


It was used in ancient civilizations such as Egypt and Mesopotamia for construction, land measurement, and crafts, especially when more precision or a larger unit was needed.


Key points:



  • Long cubit ≈ 21 inches (53 cm)



  • Longer than the standard cubit (usually about 18 inches)



  • Used in ancient architecture and surveying



  • Provided a larger base unit for measurements in construction



The long cubit helped ancient builders and surveyors manage larger scales while still relying on the human body as a reference.


Roman Actus


The actus was an ancient Roman unit of length used primarily in land measurement. It is approximately 120 Roman feet, which equals about 35.5 meters (around 116.5 feet).


The actus was often used to define dimensions of fields and plots of land. It was also part of Roman surveying practices, helping organize land division and property boundaries.


Key facts:



  • 1 actus = 120 Roman feet ≈ 35.5 meters



  • Used in Roman land surveying and agriculture



  • Essential for measuring fields and agricultural plots



  • Reflects the Roman emphasis on precise land division



The actus highlights the sophistication of Roman engineering and property management in their time.




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