A stromuhr for measuring blood flow, 1880-1881.

Exton, David

A stromuhr for measuring blood flow, 1880-1881.
3 4 c m
40cm
actual image size: 32cm x 26cm

Description

Designed by C Ludwig and made by the Cambridge Scientific Instrument Co. The stromuhr (literally 'flow meter') consists of two glas bulbs joined at the top and connected to an artery at the bottom. The blood flow is calculated from the length of time it takes for the blood from the artery to displace a given quantity of saline solution.

© Science Museum / Science & Society Picture Library

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