Lens hook, steel and ivory, late 19th century
1871-1900
Lens hook with ivory handle
Two lens hooks
1831-1870
Beer's lens hook
1870-1930
Lens hook with ivory handle
Guarded lens hook with ivory handle
Two lens hooks with wooden handles
Lens hook with ivory handle
Lens hook
1851-1900
Lens hook from ophthalmic instrument set
Lens hook with ivory handle
Lens hook with ivory handle
Three lens hooks with ivory handle
Lens hook with ivory handle
Lens hooks with wooden handle
Lens hook with ivory handle
Lens hook with ivory handle
Guarded lens hook
1901-1930