Oak cased barograph and barometer

Unusual mahogany-cased barograph and barometer by Negretti & Zambra, having five glazed removable lid. The mechanical eight-day movement is housed in the drum, fitted with a seven-day chart that covers one full rotation of the drum. The ink trace, or barogram, on the recording paper, is a visual record of changes in pressure. The aneroid barometer mechanism has eleven stacked vacuum capsules and utilizes a gate suspension, with an unusual half-round barometer...

Unusual oak-cased barograph and barometer by Negretti & Zambra, having five glazed removable lid. The mechanical eight-day movement is housed i...

Mahogany cased barograph, having five glazed removable lid, and a drawer below to house the charts. The mechanical eight-day movement is housed in the drum, fitted with a seven-day c...

XJohn Trotter walnut-cased Barograph, having five beveled glazed removable lid, and a drawer below to house the charts. The mechanical eight-day movement is housed in the drum, fitte...

Walnut Cased Barograph, having five glazed removable lid. The mechanical eight-day movement is housed in the drum, fitted with a seven-day chart that covers one full rotation of the ...

Late 19th century oak cased stick barometer and thermometer by J Hicks of London with engraved scales contained in oak case having shaped and moulded p...

Edwardian polished oak cased barograph with bevelled glass panels. Brass base plate stamped ‘Regent, Jewelled movement supporting the ten vacuum chambers linking the ink pen pointer ...

Negretti & Zambra Fine Edwardian oak cased barograph with bevelled glass panels and central chart drawer. Ten vacuum chambers linking ...

An Edwardian cased oak barograph with bevelled glass panels and a central chart drawer. Inscribed ‘Made by Short & Mason London, for A & N C S Westminster’. A & N C S refers to the Army & Navy Co-operative Society Ltd., an army surplus...

Negretti & Zambra Fine Edwardian oak cased barograph with hinged lid, bevelled glass panels and central chart drawer. Seven vacuum ...

Negretti & Zambra Fine Edwardian mahogany cased barograph with beveled glass panels and central chart drawer. Seven vacuum chambe...

A rare and interesting French mahogany-cased barograph by Richard Jules. circa 1900 Exquisitely handcrafted in Paris, France, in the early 20th century, this fine weather forecasting scientific instrument is a barometer that records the barometric pressure over time in graphical form, as well as make a continuous recording of atmospheric pressure. Housed in a high-quality protective wooden case, having hinged lid with original glazed glass panel sides, barograph with centigrade thermometer scale, fitted with eight aneroid capsules stacked in series, cylindrical drum element with graph for data recording and analysis. Signed, retaining the maker's marks to top and interior. The metal plaque affixed to top reads: "Barometre Enregistreur Ancene Mon Richard Frères...