Vacuum Gauge, Eugène Bourdon, c. 1860
brass, copper, iron, steel, wood and glass, h 4.7cm × w 31.7cm × d 20.5cm Catalogue entry
Vacuum Gauge, Eugène Bourdon, c. 1860
brass, copper, iron, steel, wood and glass, h 4.7cm × w 31.7cm × d 20.5cm Catalogue entry