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Casella London Airflow Ref:933 1974
British Meteorological Office Pictorial Guide for the Maintenance of Meteorologi
Thermograph WW2 By Friez Instrument Division, Baltimore 1943
Thermograph By Short & Mason, London Circa 1950
Thermograph By Richard Freres, Paris Circa 1912
Thermograph By Negretti &Zambra, London For Instruments Ltd, Ottawa & Toronto Ci
Thermograph By M Sendtner, Munchen Circa 1925
Thermograph By Lawrence & Mayo, London Circa1937
Thermograph By Jules Richard, Paris Circa 1925
Self Recording Thermometer (Thermograph) By Draper, New York Circa 1900
Remote Reading Thermograph By Jules Richard (Richard Freres), Paris Circa 1950s
Numerous makers, Negretti & Zambra, Wilson & Warden, Short & Mason etc Circa1950
Negretti & Zambra Thermograph, Copper Lid
Porcelain Screen Thermometers by Negretti & Zambra & Zeal
