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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/AP/33/24/3" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Unpublished figure, compass with magnetic needles by Julius Roberts</dc:title>
  <dc:description>A figure in coloured ink, labelled figure 3, showing a compass constructed by Roberts with two correcting arcs and the north and south poles labelled.

Subject: Marine engineering / Magnetism / Scientific apparatus and instruments</dc:description>
  <dc:date>1852</dc:date>
</rdf:Description>