Oscillotonomètre Dr. von Recklinghausen schen Tonometer Scala Alternans ALTERA DRP 0 → 300 mm Hg 0 → 400 cm H2O. g / cm N°: 76 Year: ~1925 Dimensions: width: 26 cm length: 15 cm height: 8 cm Inventor: Inconnu Manufacturer: Dr. von Recklinghausen