
1) Wind-measuring range
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https://www.crosswordclues.com/clue/beaufort-scale

The Beaufort scale t is an empirical measure that relates wind speed to observed conditions at sea or on land. Its full name is the Beaufort wind force scale, although it is a measure of wind speed and not of force in the scientific sense. == History == The scale was devised in 1805 by Francis Beaufort (later Rear Admiral Sir Francis Beaufort), an...
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http://en.wikipedia.org/wiki/Beaufort_scale

The scale describing wind force devised by Admiral Sir Francis Beaufort in 1808, in which winds are graded by the effect of their force (originally, the amount of sail that a fully rigged frigate could carry). Scale now reads up to Force 17.
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http://en.wikipedia.org/wiki/Glossary_of_nautical_terms

The scale describing wind force devised by Admiral Sir Francis Beaufort in 1808, in which winds are graded by the effect of their force (originally, the amount of sail that a fully rigged frigate could carry). Scale now reads up to Force 17.
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http://en.wikipedia.org/wiki/Glossary_of_nautical_terms

A scale that indicates wind speed by the effect wind has on familiar objects.
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http://www.bbc.co.uk/weather/weatherwise/glossary/b.shtml

scale devised in 1805 by Comdr. (later Admiral and Knight Commander of the Bath) Francis Beaufort of the British Navy for observing and classifying ... [2 related articles]
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http://www.britannica.com/eb/a-z/b/37

A scale that indicates the wind speed using the effect wind has on certain familiar objects.
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http://www.encyclo.co.uk/local/22268

A scale of numbers representing different wind speeds and a description of their
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http://www.encyclo.co.uk/local/22272

a scale measurement of the wind from 1-10
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http://www.encyclo.co.uk/visitor-contributions.php

The beaufort scale measures wind speed at sea.
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http://www.probertencyclopaedia.com/browse/GB.HTM

[
n] - an international scale of wind force from 0 (calm air) to 12 (hurricane) 2. [n] - a scale from 0 to 12 for the force of the wind
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http://www.webdictionary.co.uk/definition.php?query=Beaufort%20scale

a scale used to identify wind strength
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https://sciencetrek.org/sciencetrek/topics/weather/glossary.cfm

The relationship between sea state and wind speed. The Beaufort Scale can be used to estimate wind speed at sea, but is valid only for waves generated within the local weather system, and assumes that there has been sufficient time for a fully developed sea to have become established.
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https://www.encyclo.co.uk/local/20127

In 1805 Admiral Beaufort drew up a scale of wind strengths related to commonly observable phenomena.
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https://www.encyclo.co.uk/local/20687

This is a scale to help sailors work out how strong the wind is by looking at the surface of the sea. It was developed in 1805 by Admiral Sir Francis Beaufort. There is now also a version for use on land. It goes from Force 0 to Force 12. Force 8 is a gale.
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https://www.encyclo.co.uk/local/20689

A numerical system, ranging from 0 (Calm) to 12 (Hurricane) to classify the speed of the wind and covering a range of 0 to 75 m.p.h. or over. The system was originated by Rear-Admiral Sir Francis Beaufort and is based on observing the effect of winds on common objects.
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https://www.encyclo.co.uk/local/20784
wind scale noun an international scale of wind force from 0 (calm air) to 12 (hurricane)
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https://www.encyclo.co.uk/local/20974

System of recording wind velocity, devised by Francis Beaufort in 1806. It is a numerical scale ranging from 0 to 17, calm being indicated by 0 and a hurricane by 12; 13–17 indicate degrees of hurricane force. In 1874 the scale received international recognition; it was modified in 1926. Measurements are made at 10 m/33 ft above gr...
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https://www.encyclo.co.uk/local/21221

a scale of wind forces, described by name and range of velocity, and classified as from force 0 to force 12, or, sometimes, to force 17. · a scale of the states of sea created by winds of these various forces up to and including force 10.
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https://www.infoplease.com/dictionary/beaufort-scale
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