Accession No
3896
Brief Description
cup anemometer, by Casella, English
Origin
England; London
Maker
Casella
Class
meteorology
Earliest Date
Latest Date
Inscription Date
Material
plastic; metal
Dimensions
box length 304mm; breadth 245mm; height 102mm
Special Collection
Provenance
Transferred from Department of Geography, University of Cambridge, Cambridge, England, 1992.
Inscription
‘CASELLA
LONDON
MADE
IN ENGLAND
647’
‘CASELLA
LONDON’ ( on box)
Description Notes
Three-cup anemometer in fitted box. 3 cups. Instrument is in three parts (11-1-2000). 3 plastic coated sheets held by clip in lid showing calibration curve. For wind speeds of between 0-15 metres per second. Instructions for assembling cups inside box. Further instruction leaflet missing. Label on top of box, dated 8-1981.
Condition: good; complete.
References
Events
Description
This anemometer can measure wind speeds of up to 15 metres per second – equivalent to 3.4 knots – the knot, or nautical mile, being the international unit for measuring wind speeds. Each rotation of the cups sends an electrical pulse which is converted at the register to show the wind velocity.
26/03/2008
Created by: Dr. Anita McConnell on 26/03/2008
FM:43687
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