Reunion of six seismographs in lacquered sheet metal, natural wood, metal and cast iron, including two marked J. GAMBS in Lyon (n°167683 and n°138767), one Jules PETER in Lyon (Type: NG 5309 - n°241034), one GAMBS, one Jules RICHARD in Paris (n°153811) and one unmarked (n°325755). 20th century GAMBS in Lyon: H. 16 cm - W. 29.5 cm - D. 14 cm; H. 12 cm - W. 19 cm - D. 10.5 cm GAMBS: H. 17.5 cm - W. 27.5 cm - D. 13 cm RICHARD: H. 27 cm - W. 32.5 cm - D. 13.5 cm PETER: H. 17.5 cm - W. 29 cm - D. 13.5 cm Anonymous: H. 16.5 cm - W. 30 cm - D. 14 cm As is, accidents and missing pieces (including two feet on a seismograph).