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HEMISFERIUM
Tide Computer Miniature
Last contact on 13/11/2026Product description
This miniature is an abacus or tidal calculator. It was one of the sides of an interesting instrument which was used to navigate and figure the time of the tides. The tides, with their constant change in the water level, greatly affect navigation both in harbours and for fishing.The original piece was one of the earliest British Renaissance instruments. Signed by Humphrey Cole it was a Nocturnal and Tidal Abacus (1570). Currently this instrument can be found in the British Museum, London.
Product specifications
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