Component, for Aircraft temperature, humidity and pressure recorder, by Julian P. Friez & Sons Inc, Baltimore, Maryland, United States of America, 1939 Component, for Aircraft temperature 1939
Reconstruction absorbtion hygrometer based on Leonardo da Vinci drawings Reconstruction absorbtion hygrometer
Colour diagram by R. Lonergan, 1938, of the Dines Pressure tube Anemometer, in glazed wooden frame. Colour diagram by R. Lonergan
Weather map of South East England and 14 assorted weather symbols Weather map of South East England and 14 assorted weather symbols