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| Meteorology |
| Barographs |
A barograph is a recording aneroid barometer where the changes in atmospheric pressure are recorded on a paper chart. The recording chart is mounted on a drum which is turned by clockwork.
The Norfolk and The Blakeney barographs both have mechanical eight-day clocks with a seven-day chart which covers one full rotation.
The ink trace, or barogram, on the recording paper is a visual record of changes in pressure and the trend shown can be an invaluable help in forecasting weather changes. Charts are available in inches or millibars, starting on a Sunday or a Monday.
Each instrument is hand assembled and then tested and calibrated to a standard chart in our own pressure/vacuum chamber.
Replacement charts, fibre pens and ink are available to order.
Where a price is shown for a product, that price includes VAT and UK carriage.
Please note that we have a minimum order value of £25 or $50.
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The Norfolk Barograph
The Norfolk display barograph is our finest recording barometer in an elegant case with bevelled glass. It is fitted with a mechanically-powered eight-day clock. It is supplied with ink and 104 weekly recording charts, which can be stored in the drawer underneath.
380mm (15") x 230mm (9") x 200mm (8")
£1095.00
990 Wall-mounting mahogany display shelf
435mm (17") x 260mm (10") x 230mm (9")
£110.00
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950 |
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The Blakeney
The Blakeney is a handsome and practical instrument with flat glass in the casing. The movement is the same as in The Norfolk. There is a drawer to store spare and used charts. It is supplied with 104 weekly recording charts and ink.
380mm (15”) x 230mm (9”) x 200mm (8”)
£1050.00
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925 |
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The Jubilee barograph
The Jubilee barograph is a miniature instrument that will grace any desk, mantelpiece or table as well as providing much interest. It has a hand-made, solid mahogany case with flat glazed windows. The brass mechanism is fitted with a four-capsule stack aneroid and the clock is quartz powered with a seven day rotation. The fibre-tipped nib is self-inking and the operating range is 960 to 1050 millibars. The Jubilee barograph is supplied complete with clock battery, 104 charts and spare nib.
240mm (9 1/2”) x 170mm (6 3/4”) x 130mm (5 1/4”)
This model is now available in oak.
£550.00
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207MQ |
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Marine barograph with vibration-damped measuring system
Marine barograph with vibration-damped measuring system and quartz-powered seven day clock. Supplied in a glazed, mahogany-stained beech case with storage draw for spare charts. Measuring range of 955 to 1060 millibars with an accuracy of +/- 0.7 millibars.
345mm (13 1/2”) x 190mm (7 1/2”) x 185mm (7 1/4”)
£575.00
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217M & MQ |
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217M & MQ Marine barograph with vibration-damped measuring system
Marine barograph with vibration-damped measuring system and quartz-powered seven day clock - Model 217MQ. Supplied in a glazed, mahogany-stained beech case. Measuring range of 955 to 1060 millibars with an accuracy of +/- 0.7 millibars.
330mm (13”) x 185mm (7 1/4”) x 180mm (7”)
£550
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285MQ |
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285MQ Shore-based marine barograph
with polished brass base plate. Also available with clockwork mechanism. Supplied in a glazed, mahogany-stained beech case. Measuring range of 955 to 1060 millibars with an accuracy of +/- 0.7 millibars.
345mm (13 1/2”) x 190mm (7 1/2”) x 185mm (7 1/4”)
£600
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225Q |
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225Q Barograph
with white finish cast aluminium and chromed steel housing. Quartz controlled battery clock. Operating range of 955mb to 1060mb at an accuracy of +/- 0.7mb.
290mm x 145mm x 190mm. Weight: 2.5kg
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