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Barograph (recording barometer) made by Richard Freres, Paris
barograph (recording barometer)
INSTRUMENTS - BAROMETERSRichard Freres
France, Paris
6.63 x 11.75 x 5.38
Barograph (recording barometer) housed in mahogany case with a glass front. One end is hinged half way up and lifts from the opposite end which is secured by a hook and loop fastener. On top are a handle and a small ivory label reading: ENREGISTREURS RICHARD/ BREVETES S.G.D.G./ 8, IMPASSE FESSART/ PARIS. Barograph itself has double bellows and mechanical linkage to pen, recording drum containing wind-up mechanism. Seven day chart graduated from 28 to 31. Winding key missing. Interior of case cover reads: Zi-ka-wei./ Observatory./
1971.20