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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/CLP/8i/29" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Paper, 'How to make an instrument, to know the height of the pole the longitude, the declination of the sun, the amplitude and the variation of the needle at any houre of the day' by unknown author</dc:title>
  <dc:description>The author presents full instructions on making and using this instrument. A reply by Lord Brouncker is copied at the end.

Subject: Scientific apparatus and instruments / Astronomy</dc:description>
  <dc:date>[17th Century]</dc:date>
</rdf:Description>