Polar clock
- maker:
- William H Darker
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LicensePolar clock, by W. H. Darker, Lambeth; London, mid 19th century
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© The Board of Trustees of the Science Museum
Polar clock, by W. H. Darker, Lambeth; London, mid 19th century. Wooden frame with glass semicircle inlaid with selenite that polarises sunlight according to time of day when viewed from the north.
