INTERNATIONAL METEOROLOGICAL INSTRUMENT HISTORY · OBJECTS

Three-cup anemometer rotor study

What it means: The Science Museum Group records a British-made three-cup instrument with Canadian design context. That specific history supports the selected form without making the new illustration a labelled reproduction; the Met Office distinguishes cup-based speed measurement from a separate direction vane.

A cup anemometer turns around a vertical spindle; calibrated rotation provides wind speed while a separate vane supplies direction. A historical museum example confirms three cups on radial arms connected to one hub.

Notice what is moving around you.

Often chosen for: Curiosity, creativity & wonder

Respectful use: Three cups are one documented configuration, not the form of every anemometer. A calibrated real instrument can relate rotation to wind speed; cups alone do not establish direction. This generic rotor has no copied manufacturer housing, museum accession identity, navigation function, calibration, weather-safety use or claim of measurement accuracy. This is original generated decorative artwork, not an exact site survey, artifact replica or operating guide. Blue and gold are editorial colors. No institutional or community endorsement is claimed. No blanket commercial or manufacturing clearance is claimed.

Sources: [1] weather.metoffice.gov.uk [2] collection.sciencemuseumgroup.org.uk