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Board of Longitude


Found in 1 Collection or Record:


Letter from Joseph Davidson to the Board of Longitude, 1790-04-15

Reference Code: GBR/0180/RGO 14/40: 522-523
Scope and Contents

Concerning his proposed method of finding longitude based on drawing a right angle from any point of latitude. Davidson states that his method had been tested on two voyages where it proved exact to within ten miles.

Dates: 1790-04-15
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  • Subject: Hackney X

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