Convert square rod (US survey) to square millimeter
Please provide values below to convert square rod (US survey) [sq rd (US)] to square millimeter [mm^2], or Convert square millimeter to square rod (US survey).
How to Convert Square Rod (Us Survey) to Square Millimeter
1 sq rd (US) = 25292953.25 mm^2
Example: convert 15 sq rd (US) to mm^2:
15 sq rd (US) = 15 × 25292953.25 mm^2 = 379394298.75 mm^2
Square Rod (Us Survey) to Square Millimeter Conversion Table
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Square Rod (Us Survey)
A square rod (US survey) is a unit of area equal to the area of a square with sides measuring one rod (16.5 feet) each, used primarily in land measurement.
History/Origin
The square rod originated from the traditional land measurement system in the United States, particularly in surveying and real estate, where the rod was a common unit of length. It has been used historically for measuring plots of land, especially in rural and agricultural contexts.
Current Use
Today, the square rod (US survey) is largely obsolete and replaced by more modern units like acres. However, it may still be encountered in historical land records and surveying documents.
Square Millimeter
A square millimeter (mm²) is a unit of area equal to the area of a square with sides measuring one millimeter.
History/Origin
The square millimeter has been used in scientific and engineering contexts for precise measurement of small areas, especially in fields like electronics and material science, as a subdivision of the metric system established in the 19th century.
Current Use
It is commonly used today in fields such as electronics, manufacturing, and scientific research to measure small surface areas, including the cross-sectional areas of wires and components.