Welsh's slide rule for psychometric observatiosn,

Made:
London
maker:
Adie, Patrick

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Welsh's slide rule for psychometric observatiosn, made by [ADIE] 395 Strand, London. Scales A (linear), B, C and D on reverse, slider mended, F, E (labelled relative humidity) H (marked dry and dewpoint) I on side with makers name

Details

Category:
Meteorology
Object Number:
1995-906
type:
slide rule
credit:
Meteorological Office, Berkshire