What is a Link (li) in length measurement?

A Link (li) is a historic English surveying unit equal to 0.66 feet or 0.201168 metres, mainly used in 18th and 19th century land measurements.

What does Earth's polar radius represent?

Earth's polar radius is the distance from Earth's center to its mean geographic pole along the rotation axis, serving as the semi-minor axis in geodetic reference ellipsoids like WGS84.

Why convert Links to Earth's polar radius?

Converting Links to Earth's polar radius helps relate historic land measurements to modern geodetic systems and facilitates integrating old survey data with current mapping technologies.

How to Convert from Link [li] to Earth's Polar Radius

Learn how to convert the historic length unit Link [li] into Earth's polar radius, a geodetic reference used in mapping and satellite navigation.

Link [li]

Earth's polar radius

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Link [li] to Earth's polar radius Conversion Table

Link [li]	Earth's polar radius

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Link [li] to Earth's polar radius Conversion Table
Link [li]	Earth's polar radius

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What Is This Tool?

This converter allows users to transform measurements given in the historic surveying unit Link (li) into Earth's polar radius, a fundamental geodetic dimension. It facilitates the integration of old land measurement data with modern geographic reference models.

How to Use This Tool?

Enter the length value in Links (li) that you want to convert.
Select the output unit as Earth's polar radius.
Click convert to get the corresponding value expressed in Earth's polar radius.
Use the output to support geodetic calculations or historical data mapping.

Key Features

Converts length units from Link (li) to Earth's polar radius with precise formulas.
Supports historical surveying and cadastral data interpretation.
Useful for geodesy, cartography, and GIS applications involving historical land records.
Browser-based and easy to use for integrating old measurements with modern geodetic systems.

Examples

10 Links (li) equals 3.1646225752453e-7 times Earth's polar radius.
1000 Links (li) corresponds to 3.1646225752453e-5 times Earth's polar radius.

Common Use Cases

Relating historic land measurements in Links to modern geodetic dimensions.
Reconstructing property boundaries from 18th and 19th century cadastral documents.
Supporting geodesy and satellite navigation calibrations through unit conversions.
Integrating archival surveying data with geographic information systems (GIS).

Tips & Best Practices

Ensure the measurement in Links is accurately sourced from historical records.
Use the conversion primarily for archival, reconstruction, and research purposes due to the unit's historic nature.
Be aware of the reference ellipsoid model (such as WGS84) when applying Earth's polar radius in calculations.
Verify your results within the context of your mapping or geodetic application to account for possible minor discrepancies.

Limitations

The Link (li) is a historic unit and is rarely used in modern surveying.
Conversion accuracy depends on how precisely historic Links were measured and recorded.
Variations in geodetic reference ellipsoids and epochs can introduce small differences if the Earth's polar radius from other models is used.

Frequently Asked Questions

What is a Link (li) in length measurement?: A Link (li) is a historic English surveying unit equal to 0.66 feet or 0.201168 metres, mainly used in 18th and 19th century land measurements.
What does Earth's polar radius represent?: Earth's polar radius is the distance from Earth's center to its mean geographic pole along the rotation axis, serving as the semi-minor axis in geodetic reference ellipsoids like WGS84.
Why convert Links to Earth's polar radius?: Converting Links to Earth's polar radius helps relate historic land measurements to modern geodetic systems and facilitates integrating old survey data with current mapping technologies.

Key Terminology

Link (li): A historic English unit of length equal to 1/100 of Gunter's chain, used primarily in 18th and 19th century surveying.
Earth's polar radius: The distance from Earth's center to the mean geographic pole, representing the semi-minor axis of a geodetic reference ellipsoid such as WGS84.
WGS84: A widely used geodetic reference ellipsoid model defining Earth's shape, including its polar radius.

Quick Knowledge Check

What is the Link (li) primarily used for?

Modern GPS surveying

Historical land measurement and cadastral records

Measuring satellite orbits

Earth's polar radius corresponds to which part of Earth?

Distance from equator to surface

Distance from center to geographic pole

Circumference at the equator

Why might precision vary in converting Links to Earth's polar radius?

Different chain lengths used today

Differences in reference ellipsoids and historic measurement accuracy

Changes in Earth's shape over centuries

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