A good late 19th/early 20th-Century oak-cased barograph
A good late 19th/early 20th-Century oak-cased barograph, with an ivorine plaque for NEGRETTI & ZAMBRA LONDON , clockwork recording drum, seven-cell aneroid, pen arm with stop and finescrew adjustment, thermometer and ink bottle, under a hinged glazed cover on an oak base with a drawer with used and fresh recording cards and instuction sheet -- 36cm. (14 1/8in.) wide
A good late 19th/early 20th-Century oak-cased barograph
A good late 19th/early 20th-Century oak-cased barograph, with an ivorine plaque for NEGRETTI & ZAMBRA LONDON , clockwork recording drum, seven-cell aneroid, pen arm with stop and finescrew adjustment, thermometer and ink bottle, under a hinged glazed cover on an oak base with a drawer with used and fresh recording cards and instuction sheet -- 36cm. (14 1/8in.) wide
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
