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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/RBO/16/63" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>'Description of an Instrument for taking heights and distances at Sea' by Stephen Plank</dc:title>
  <dc:description>Instrument for making observations at sea by double reflection in order to find longitude
Copies of letters testifying to that this instrument existed from Peter Pooley, John Milton, William Pardon, William Hodgkin, William Heath
Read to the Royal Society on 2 March 1731</dc:description>
  <dc:date>1731</dc:date>
</rdf:Description>