What is a barograph used for?

A barograph records continuous atmospheric pressure onto a rotating paper drum over the course of a week. This allows observers to track weather trends visually without constant manual readings. Most examples feature an aneroid mechanism housed in an oak or mahogany case with bevelled glass to protect the delicate linkage arms.

How do I date an antique brass compass?

Dating relies on style markers, military broad arrow stamps, or maker signatures engraved on the dial face or inside the lid. Typography and case materials also shift from heavy Victorian brass to lighter twentieth-century aluminium alloys. Patent dates and specific workshop addresses listed in the maker's inscription narrow down the active production window.

Are these scientific instruments still accurate?

Many barometers and compasses retain functional accuracy after gentle calibration, though they served primarily as working tools rather than laboratory-grade standards today. Mechanical wear in gears and changes in magnetic declination over decades affect precise readings. Collectors treat them primarily as historical artefacts rather than reliable modern navigational instruments.

How should I clean mahogany barometer cases?

Mahogany cases require gentle dusting with a dry lint-free cloth to protect the original polished finish and any delicate carved mouldings. Avoid modern liquid polishes or silicone sprays, which accumulate in grain crevices and degrade old shellac. Feed dry wood occasionally with a sparing application of traditional beeswax applied with soft cloth.

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Antique Instrument

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An antique instrument brings practical science and maritime utility into a room through brass, mahogany, and glass.

1900 - 1920

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Antique Black Forest Style Barometer

From witchantiques.com

£225

3+ MONTHS AGO

barometers

19th century

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A Pocket Barometer

From Kembery Antique Clocks Ltd

£185

3+ MONTHS AGO

barometers

Waterman Ideal Red Ripple No 7 Fountain Pen Waterman Ideal 14ct Nib USA Model

1900 - 1920

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Waterman Ideal Red Ripple No 7 Fountain Pen Waterman Ideal 14ct Nib USA Model

From Mark Davis Antiques

£350

3+ MONTHS AGO

miscellaneous

Large Chinese Luopan Geomantic Compass, Guangdong, C.1890

19th century

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Large Chinese Luopan Geomantic Compass, Guangdong, C.1890

From Gillers Antiques Ltd

£1,000

3+ MONTHS AGO

miscellaneous

A Rare and Interesting Weather Station Klinkerfues Patent Hair Hygrometer Made by Wilh. Lambrecht, Göttingen Germany Circa 1890

19th century

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A Rare and Interesting Weather Station Klinkerfues Patent Hair Hygrometer Made by Wilh. Lambrecht, Göttingen Germany Circa 1890

From Koos Limburg Jnr. Scotland

£1,250

3+ MONTHS AGO

miscellaneous

Victorian Mabie Todd & Co No 4 Gold Plated Dip Pen

19th century

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Victorian Mabie Todd & Co No 4 Gold Plated Dip Pen

From Heathcote Antiques - S.A Webster

£110

3+ MONTHS AGO

miscellaneous

19th century

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Victorian Oak Barometer

From Sinclairs Antiques and Interiors

£145

3+ MONTHS AGO

barometers

D’arsonval Galvanometer by G. Adam of Paris

19th century

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D’arsonval Galvanometer by G. Adam of Paris

From Hatchwell Antiques

£950

3+ MONTHS AGO

miscellaneous

Portable Diptych-dial, Sundial with Compass.

19th century

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Portable Diptych-dial, Sundial with Compass.

From Hatchwell Antiques

£1,200

3+ MONTHS AGO

miscellaneous

18th century

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Pocket Spyglass

From Hatchwell Antiques

£450

3+ MONTHS AGO

miscellaneous

Several pocket instruments include tiny sliding magnifying scales designed so Victorian gentlemen could decipher minute maps and thread counts in the field.

Musical Instrument 3/4 Size Violin & Case with Bow

1940 - 1960

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Musical Instrument 3/4 Size Violin & Case with Bow

From Sale Antiques

£160

3+ MONTHS AGO

miscellaneous

19th century

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Sampson Mordan 3 Colour Silver Pencil

From Colin Brand Antiques

£175

3+ MONTHS AGO

silver

Brass Telescope with an Original Folding Brass Tripod Stand. English Circa 1860

19th century

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Brass Telescope with an Original Folding Brass Tripod Stand. English Circa 1860

From Robert Belcher Antiques

£1,250

3+ MONTHS AGO

miscellaneous

18th century

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Georgian Mahogany Stick Barometer

From Sturmans Antiques

£1,295

3+ MONTHS AGO

barometers

19th century

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Regency Mahogany Stick Barometer Signed P. Caminada, Taunton

From Buckingham Interiors

£595

3+ MONTHS AGO

barometers

Antique English Ww1 Military Issued Compass - C.1917

1900 - 1920

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Antique English Ww1 Military Issued Compass - C.1917

From Puckerings

£295

3+ MONTHS AGO

miscellaneous

← 1 2 3 4 5 6 ... 26 →

Antique Instrument

Antique Black Forest Style Barometer

A Pocket Barometer

Waterman Ideal Red Ripple No 7 Fountain Pen Waterman Ideal 14ct Nib USA Model

Large Chinese Luopan Geomantic Compass, Guangdong, C.1890

A Rare and Interesting Weather Station Klinkerfues Patent Hair Hygrometer Made by Wilh. Lambrecht, Göttingen Germany Circa 1890

Victorian Mabie Todd & Co No 4 Gold Plated Dip Pen

Victorian Oak Barometer

D’arsonval Galvanometer by G. Adam of Paris

Portable Diptych-dial, Sundial with Compass.

Pocket Spyglass

Musical Instrument 3/4 Size Violin & Case with Bow

Sampson Mordan 3 Colour Silver Pencil

Brass Telescope with an Original Folding Brass Tripod Stand. English Circa 1860

Georgian Mahogany Stick Barometer

Regency Mahogany Stick Barometer Signed P. Caminada, Taunton

Antique English Ww1 Military Issued Compass - C.1917

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