Description
Brass case with domed lid and printed paper scale with time corrections; pivoted printed paper disc with central brass gnomon and compass points and hour lines, beneat domed glass cover.
Acknowledgement: © History of Science Museum, University of Oxford, inv.46650
Brass case with domed lid and printed paper scale with time corrections; pivoted printed paper disc with central brass gnomon and compass points and hour lines, beneat domed glass cover.