Bow Fronted Stick Barometer by Rubergall of London
An excellent bow fronted stick barometer by this Royal Instrument Maker.
The silvered brass scale is calibrated from 28" to 31" and has an integrated sliding rack and pinion vernier which is controlled with a bone set key. The dial is also engraved with weather indications and the makers name and place of work to the top of the scale, Thomas Rubergall, 24 Coventry Street, London. The full length mercury thermometer to the main trunk is calibrated in Fahrenheit from 20º to 110º. The highly desirable bow fronted mahogany case has excellent flame veneers to the bowed front and with a swan neck pediment with bone paterea and an ornate brass finial to the centre. The base has an ebonised boxwood urn cistern, ebony mouldings and further ebony inlay and a cistern screw for transportation purposes.
A very collectable Scientific Instrument of the highest quality.
Note: Thomas Rubergall is listed as Optician and Mathematical Instrument Maker to the Duke of Clarence (later to become William IV) and he was also Optician to King George III.
Price: £8,750 / C.1825