Sea-surface temperature bucket, Crawford type

Made:
1960-1970 in United Kingdom
Sea-surface temperature bucket, Crawford type Sea-surface temperature bucket, Crawford type Sea-surface temperature bucket, Crawford type Sea-surface temperature bucket, Crawford type Sea-surface temperature bucket, Crawford type Sea-surface temperature bucket, Crawford type

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Buy this image as a print 

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License this image for commercial use at Science and Society Picture Library

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Buy this image as a print 

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License this image for commercial use at Science and Society Picture Library

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Buy this image as a print 

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License this image for commercial use at Science and Society Picture Library

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License this image for commercial use at Science and Society Picture Library

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Sea-surface temperature bucket, Crawford type
Science Museum Group
© The Board of Trustees of the Science Museum

Sea-surface temperature bucket, Crawford type
Science Museum Group
© The Board of Trustees of the Science Museum

Sea-surface temperature bucket, Crawford type
Science Museum Group
© The Board of Trustees of the Science Museum

Sea-surface temperature bucket, Crawford type
Science Museum Group
© The Board of Trustees of the Science Museum

Sea-surface temperature bucket, Crawford type
Science Museum Group
© The Board of Trustees of the Science Museum

Sea-surface temperature bucket, Crawford type
Science Museum Group
© The Board of Trustees of the Science Museum

Sea-surface temperature bucket, formerly the property of the Meteorological Office Marine Branch, of a type invented by British engineer Allan Crawford in the 1960s.

Buckets like this were used by mariners to collect samples of seawater in order to make observations of sea surface temperature from the 1960s. While simpler buckets had been used for over a century, it was difficult to ensure the accuracy and consistency of the data. The temperature of the bucket itself influenced readings, and sometimes the temperature of the sample or thermometer varied before the reading was made. This design was patented by the engineer Allan Crawford, who sought to address some of the key issues. The bucket’s rope tail orientated it in the water so it collected a sample of water correctly and at the right depth, and a flap enabled the thermometer to be read without removing it from the bucket.

Details

Category:
Meteorology
Object Number:
1997-2087
Materials:
complete, metal and plastics
Measurements:
overall: 43.5 cm 10.4 cm, 2.25 kg
Bucket only: 435 mm 120 mm,
type:
sea surface temperature bucket
credit:
Meteorological Office