A mid 19th-Century Porter-type pocket compass dial,

Details
A mid 19th-Century Porter-type pocket compass dial,
signed W. YOULE LEADENHALL STREET., the floating card with printed compass rose, hour ring IIII - XII - VIII and sun face motif, jewelled brass cap and brass gnomon, glass domed cover and turned wooden case with screw on lid (lid neatly repaired) -- 2 1/8in. (5.4cm.) diameter

See Illustration
Literature
Gloria Clifton and Gerard L'E. Turner (ed.) Directory of British Scientific Instrument Makers 1550-1851 (London, 1995)

Lot Essay

According to Clifton, William Youle (fl. 1822-66) was working at 79 Leadenhall Street between 1840 and 1842.

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