What is Earth's polar radius?

Earth's polar radius is the distance from the Earth's center to its geographic pole along the rotation axis, corresponding to the semi-minor axis of a reference ellipsoid like WGS84.

What is a link (US survey)?

The link (US survey) is a historical length unit equal to 1/100 of a Gunter's chain, used mainly in US land surveying, where one link equals 0.66 US survey feet or approximately 0.201168 meters.

Why convert Earth's polar radius to links?

This conversion helps integrate and interpret large geodetic and satellite data with historical land survey records and cadastral mapping units used in the US.

How to Convert from Earth's Polar Radius to Link (US survey) [li]

Learn how to convert measurements from Earth's polar radius to the US survey link unit. Understand the definitions, use cases, examples, and limitations of this unit-pair conversion for geodetic and surveying applications.

Earth's polar radius

Link (US survey) [li]

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Earth's polar radius to Link (US survey) [li] Conversion Table

Earth's polar radius	Link (US survey) [li]

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

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Interval

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Earth's polar radius to Link (US survey) [li] Conversion Table
Earth's polar radius	Link (US survey) [li]

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What Is This Tool?

This converter transforms length measurements from Earth's polar radius—a geodetic distance from the Earth's center to the geographic pole—into links, an historical US survey unit used in land measurement. It aids in integrating large-scale geodetic data with traditional cadastral and surveying records.

How to Use This Tool?

Enter the value measured in Earth's polar radius you want to convert.
Select Earth's polar radius as the input unit and link (US survey) as the output unit.
Click the convert button to obtain the equivalent length in links.
Use the result to interpret or compare with historic surveying records and land plats.

Key Features

Converts between Earth's polar radius and link (US survey) units accurately based on established definitions.
Supports large value conversions reflecting geodetic scale measurements into smaller historic survey units.
Provides unit definitions and common use cases for both Earth's polar radius and link (US survey).
Includes example conversions to illustrate usage and results.
Helps reconcile modern geodetic data with legacy land survey measurements.

Examples

1 Earth's polar radius equals 31,599,281.63 links (US survey).
0.5 Earth's polar radius converts to 15,799,640.81 links (US survey).

Common Use Cases

Defining the semi-minor axis of reference ellipsoids in geodetic and GPS mapping applications.
Converting geodetic measurements to reconcile with historic US land survey plats and cadastral records.
Supporting satellite orbit modeling and studies related to Earth's shape and altimetry.
Facilitating civil engineering or land-transfer projects needing consistency between modern and legacy units.

Tips & Best Practices

Always verify the context of historic survey data when interpreting lengths in links.
Consider the large numeric scale when converting Earth's polar radius and use appropriate units for practical use.
Account for regional and temporal differences in survey unit definitions when reconciling measurements.
Use this conversion tool to integrate modern geodetic data with legacy surveying information accurately.

Limitations

The link (US survey) is a localized historical unit with limited global application and precision.
Earth's polar radius represents a very large length, resulting in very large numbers in links that may be impractical for some uses.
Variations in survey unit definitions over time and across regions may complicate data reconciliation.

Frequently Asked Questions

What is Earth's polar radius?: Earth's polar radius is the distance from the Earth's center to its geographic pole along the rotation axis, corresponding to the semi-minor axis of a reference ellipsoid like WGS84.
What is a link (US survey)?: The link (US survey) is a historical length unit equal to 1/100 of a Gunter's chain, used mainly in US land surveying, where one link equals 0.66 US survey feet or approximately 0.201168 meters.
Why convert Earth's polar radius to links?: This conversion helps integrate and interpret large geodetic and satellite data with historical land survey records and cadastral mapping units used in the US.

Key Terminology

Earth's polar radius: Distance from the Earth's center to the mean geographic pole along the rotation axis, representing the semi-minor axis of a geodetic reference ellipsoid.
Link (US survey): A historical US survey length unit equal to 1/100 of a Gunter's chain, used for linear measurements in land surveying and cadastral records.
WGS84: A widely used geodetic reference ellipsoid defining Earth's shape and serving as a standard for GPS and mapping systems.

Quick Knowledge Check

Which unit represents a very large geodetic distance?

Link (US survey)

Earth's polar radius

Gunter's chain

One link (US survey) equals how many US survey feet?

0.66

100

What is a primary use of converting Earth's polar radius to links?

To convert satellite orbit data

To reconcile modern geodetic data with historic land surveys

To measure cadastral boundary heights

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