Plethysmograph
Object number@EVV
TitlePlethysmograph
Creator Edinburgh Gardner & Son (Manufacturer)
DescriptionPlethysmograph, clockwork pulse, by Gardner & Son, Edinburgh
Clockwork ECG, records and measures the heart rate by transmitting movement from the radial pulse onto a paper trace. A sensitive manometer sits on the radial artery and the resulting tiny movements are amplified through to a needle by means of a weighted pulley. A clockwork mechanism turns a roller which winds recording paper under the needle to record a trace.
Object namePlethysmograph, clockwork pulse
Object categoryMedical Equipment
MaterialSteel, plated, Cloth
Dimensions
- Object Length: 5.2 cm
Width: 3.5 cm
Height: 5.5 cm
Strap Length: 35.5 cm
Width: 2 cm
Box Length: 7.5 cm
Width: 7.5 cm
Height: 5 cm