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Hand spectroscope

Johannes Adam Hilger Ltd
brass pocket prism spectroscope (Closed: 90 mm, open 115 mm) in its brass case (100 mm x 18 mm), said to have been used by the artist “C HAMILTON ELLIS”
Signed ".A. Hilger | London", pre 1892 (after 1892 the country of origin was stated).

Collection: private collection