Open Scale Barograph by C F Casella & Co of London

A mid twentieth century Campbell–Stokes sunshine recorder, by Casella & Co, London. Pattern: Mk III C 45- 65 (latitudes 45° – 65°, North or South). 4 inch glass sphere. Serial number: 6962 Marked: CASELLA LONDON MADE IN ENGLAND 6962 For similar Casella sunshine recorders see the collections of: Science Museum, London. OBJECT NUMBER:1995-820. The National Museum of the Royal New Zealand Navy, Torpedo Bay, New Zealand. The Campbell–Stokes sphere is used to record sunshine. It was invented by John Francis Campbell in 1853 and modified in 1879 by Sir George Gabriel Stokes. The original design by Campbell consisted of a glass sphere set into a wooden bowl with the sun burning a trace on the bowl. Stokes’s refinement was to make the housing out of metal and to have a card holder set behind the sphere. C. F. Casella and Co: Established in 1810 as Tagliabue and Casella. Incorporated as a limited liability company, C. F. Casella and Co, in 1910. Circa 1930: C. F. Casella and Co Ltd., of Regent House, Britannia Walk, London, N1 7ND - Makers of anemometers, anemographs, barometers, barographs, hygrometers, hygrographs, radiation instruments, rain gauges...

An open scale Micro-barograph by Short & Mason of London in enameled glass case. Number: 551/41 Seven day clockwork drive by Horstmann Gear Co Ltd, of Bath. Serial number: 7027/59 With Meteorological Office “MO” logo. Meteorological Office calibration certificate dated 27.6.96 Literature: Barometers - Aneroid and Barographs, Edwin Banfield, 1985. page 131 fig. 116. Short and Mason...

A Campbell–Stokes sunshine recorder, attributed to Casella & Co, circa 1910.   Mounted on a later wooden display plinth. Marked with serial number...

A rare sand and ballast measure by De Grave Short & Co Ltd of London, circa 1940. Measures one, three-quarters, and half cubic foot. Made for Monmouthshire County Council. P...

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...

Superb Large Painted Iron Balance Scales by Holliday & Co London 1907 This very large and attractive beam balance scale is set on a cast Iron base the central upright columns are a...

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 ...