Vector Instruments (V.I.) specialise in the manufacture and sale of quality, robust, professional wind speed and wind direction measuring equipment together with other weather sensors and associated equipment. Our products are available for sale to Trade, Business, Government and Educational customers (B2B sales).

Vector Instruments is a trading name of Windspeed Ltd. Vector Instruments have been developing and producing anemometers and windvanes in North wales, UK since 1972 and was only recently reorganised into a limited company, Windspeed Limited and continues to produce instruments under the Vector Instruments brand/trade name.

Recognised for many years as a leading name in the field of wind instrumentation for scientific research, Vector Instruments sensors have steadily found new uses in environmental monitoring, alternative energy, utility, and industrial applications. For this wider market, the range of wind sensors has been extended to include several new versions featuring different transducer types, outputs and other features optimised for specific applications. V.I. policy is one of continuous improvement of the whole product range, with periodic updating of specifications, while maintaining compatibility with superseded products wherever possible. New sensor designs undergo a thorough program of laboratory tests and field trials before release.

Besides the established range of wind speed and wind direction instruments, V.I. have for many years produced specialist temperature sensors; these include the T351 naturally ventilated mini-screen in versions accepting several types of sensing element, an aspirated temperature sensor (T302) made to a UK Met Office design, and the H301 wet and dry bulb psychrometer.