A long reed is a historical unit of length used in land measurement and surveying, with varying magnitude depending on locality and period.

What defines the international nautical mile?

The international nautical mile is exactly 1,852 meters, historically based on one minute of latitude, and used for marine and aeronautical distances.

Why convert from long reed to nautical miles?

Converting helps interpret and reconcile historical land measurements with modern navigational and geographic systems.

Convert Long Reed to Nautical Mile (International) Online

Easily convert length measurements from long reed to nautical mile (international) with this online unit converter tool designed for historical and navigational contexts.

Long reed

Nautical mile (international)

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Long reed to Nautical mile (international) Conversion Table

Long reed	Nautical mile (international)

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.

Long reed to Nautical mile (international) Conversion Table
Long reed	Nautical mile (international)

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What Is This Tool?

This converter transforms measurements from the long reed, a historical unit of length, into the international nautical mile, a modern navigational unit precisely defined for marine and aeronautical use.

How to Use This Tool?

Enter the length value in long reeds you wish to convert.
Select the source unit as long reed and target unit as nautical mile (international).
Click the convert button to get the equivalent length in nautical miles.
Use the results to interpret historical data or navigate marine charts.

Key Features

Converts historical long reed units into international nautical miles.
Supports understanding of old land measurement records in modern terms.
Browser-based and easy to use with quick calculations.
Useful for historical cartography, surveying restoration, and marine navigation.

Examples

Converting 10 long reeds results in 0.017280778 nautical miles.
Converting 100 long reeds results in 0.17280778 nautical miles.

Common Use Cases

Deciphering distances recorded in old land deeds and maps.
Translating historic surveying measures for property restoration projects.
Mapping historical units to modern GPS and nautical navigation systems.
Supporting oceanography and coastal studies requiring unit translation.

Tips & Best Practices

Verify historical context to understand the specific length of the long reed used.
Use conversions carefully when applying to scientific or navigation calculations.
Cross-reference with historical sources for accurate regional measurements.

Limitations

The long reed’s length varies depending on region and period, affecting precision.
It is not standardized in current measurement systems, requiring caution in use.
Conversions are approximate due to the legacy nature of the long reed unit.

Frequently Asked Questions

What is a long reed?: A long reed is a historical unit of length used in land measurement and surveying, with varying magnitude depending on locality and period.
What defines the international nautical mile?: The international nautical mile is exactly 1,852 meters, historically based on one minute of latitude, and used for marine and aeronautical distances.
Why convert from long reed to nautical miles?: Converting helps interpret and reconcile historical land measurements with modern navigational and geographic systems.

Key Terminology

Long reed: A traditional, now obsolete unit of length historically used for land measurements, varying by region and era.
Nautical mile (international): A unit of length exactly equal to 1,852 meters, used in marine and aeronautical navigation.
Conversion rate: A numerical factor used to convert between two measurement units; here, 1 long reed equals 0.0017280778 nautical miles.

Quick Knowledge Check

What is the international nautical mile precisely defined as?

Exactly 1,500 meters

Exactly 1,852 meters

Exactly 2,000 meters

Why is the long reed considered a legacy unit?

It is used in modern engineering

Its length varies by locality and period

It is standardized globally

What is a common use of converting long reeds to nautical miles?

To measure aircraft altitude

To interpret historic land deeds

To calculate vehicle speed

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