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Windspeed Ltd (Vector Instruments), 113 Marsh Road, RHYL, N. Wales, LL18 2AB, United Kingdom.
Windspeed Limited
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Celebrating more than 50 years manufacturing & servicing High Quality Vector Instruments Anemometers and Windvanes at Windspeed Ltd
Wind Speed Measurement Units and Conversion Factors    
1 metre per second (m/s, ms-1)=2.237 miles per hour (mph)
1 metre per second (m/s, ms-1)=1.9426 Knots (Kts)*
1 metre per second (m/s, ms-1)=3.60 kilometres per hour (kph)
1 Knot (Kts)*=0.515 metres per second (m/s, ms-1)
1 Knot (Kts)*=1.152 miles per hour (mph)
1 Knot (Kts)*=1.85 kilometres per hour (kph)
1 mile per hour (mph)=0.447 metres per second (m/s, ms-1)
1 mile per hour (mph)=0.868 Knots (Kts)*
1 mile per hour (mph)=1.61 kilometres per hour (kph)
Note: * There are actually two slightly different flavours of "Knots"...
A "Knot" is defined as "nautical-miles per hour", in the UK a "nautical mile" is defined as 6080 feet whereas it is defined as 1.852Km (or 6076.12 feet) internationally which means that 0.0639% should be added to "UK knots" to get "International Knots". The small difference is generally not significant. We have always used the "UK knots" definition.
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Windspeed Ltd (Vector Instruments)
 Windspeed Limited (trading as Vector Instruments),
113 Marsh Road, RHYL, North Wales, LL18 2AB, United Kingdom
Tel: +44 (0) 1745 350700
Email: sales@windspeed.co.uk
 
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