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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/CLP/8ii/33" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Letter, regarding an invention to find latitude mechanically from Andrew Reid to John Machin</dc:title>
  <dc:description>Reid presents details of the workings of his invention to find latitude mechanically, which he used when sailing from England to China. Includes a geometrical diagram.

Subject: Astronomy / Navigation / Scientific apparatus and instruments

Read to the Royal Society on 23 December 1731</dc:description>
  <dc:date>1731</dc:date>
</rdf:Description>