AN EARLY 20TH CENTURY MAHOGANY AND BOXWOOD INLAID BAROGRAPH the string inlaid frame inset with beveled glass panels on a plinth base with chart draw raised on moulded feet, the lift-off cover enclosing a clockwork driven drum and eight bellows, retailers label reading 'THOMAS ARMSTRONG & BROTHER, MANCHESTER'20cm high, 36.5cm wideThe barograph is in very good condition with no issues. The movement is very clean and ticks when wound with a strong action. The bellows also work correctly. The case is in good condition with no replaced parts or damage to the glasses, the polish is slightly faded with.
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Barograph Barometer - This is a wonderful English oak cased barograph. The case is super quality having glass to all sides and the top, eight bellows, and has a lovely feature of a chart drawer in which spare charts and other items can be stored. The case is made from oak which is a lovely colour.
A mahogany cased barograph by Sewills of Liverpool with bevelled glass case, the plinth base with full width drawer containing the instruction leaflet and spare papers, 14¼in. (36cm.) long, top glass missing. *The glazing from the top of the case is missing, and there is a small chip to the inside edge at the bottom of the removable glazed section of the case. Otherwise in good condition.
Barograph, Jules Richard, Frankreich, um 1900, registrierendes Barometer zur Aufzeichnung des zeitlichen Luftdruckverlaufs am Beobachtungsort, in aufklappbaren Holzkästchen mit Sichtfenster, Maße (LxHxB): ca. 18 x 14 x 10,5 cm, am Deckel div., kl. Plaketten, auf einer u.a. bez. "Baromètre Enregistreur, Jules Richard, Paris", Metallhenkel und ein Haken fehlen, Alters- und Gebrauchsspuren, Funktionsfähigkeit nicht überprüft.
Early 20th Century barograph set in a light oak case with base drawerThe clockwork eight-day movement is housed in the drum, fitted with a seven day chart and GLUCK mechanism that covers one rotation of the drum. The aneroid barometer mechanism is gilt brass and has 12 stacked vacuum capsules and uses a gate suspension for improved sensitivity. The recording nib is on the end of a long arm which moves to record the pressure as the drum rotates.37cm wide
AN EDWARDIAN MAHOGANY CASED BAROGRAPH BY NEGRETTI & ZAMBRA, TOGTHER WITH TWO DESK BAROMETERS (3)Early 20th Century The barograph in glazed wooden case, the base plate with maker's name inscribed, 41.5cm wide; the first barometer in dual gilt-metal case with a timepiece, 16cm wide; the second in Art Deco style 23cm wide

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