An early 20th Century rosewood cased barograph An early 20th Century rosewood cased barograph, with eleven part vacuum chamber and inked pointer for the rotating paper scale lined drum, the base plate signed by Negretti & Zambra, London, no.R/10591, the case fitted with a single shallow drawer with turned knop handle housing various accessories, 16 1/2" wide
An early 20th Century rosewood cased barograph An early 20th Century rosewood cased barograph, with eleven part vacuum chamber and inked pointer for the rotating paper scale lined drum, the base plate signed by Negretti & Zambra, London, no.R/10591, the case fitted with a single shallow drawer with turned knop handle housing various accessories, 16 1/2" wide
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.jpg "Quelle: Christie's")
.jpg "Quelle: Christie's")
