Scale for measuring force of wind, from Force 0 (calm) to Force 12 (hurricane/above 65 knots). Developed by Sir Francis Beaufort (12774-1857)in the 1830s while serving as Hydrographer of the British navy

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external image term0_beaufort_scale_0000.jpg
Image ID: 866

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NOAA description of the Beaufort scale for describing various wind and sea conditions

Record ID: 136