Heart sound apparatus according to Marbe. The apparatus serves for the graphical registration of heart sounds as well as of the pathological sounds, the duration of the systole and of the diastole etc. n° 2971. A sensible capsule together with rubber rings are serving as support and an absoprtion capsule without membrane. n° 1522 paper unwinding apparatus n° 1523 frame with 2 burners n° 1524 frame with 3 burners n° 1525 one electric tuning fork, 100 v.d. n° 1526 ond button for marking the dynam. accents n° 1527 acetylene gas producer n° 1528 Div. accessories: accumulator, carbide, rubber tubes, spare membrane, 2 paper rolls etc.

Herztonapparat nach Marbe. Der Apparat dient zur graphischen Registrierung der Herztöne, sowie der pathologischen Geräusche, der Systolen- und Diastolendauer usw.