Brodie Bellows, 1902

Brodie_Bellows_1902

T.G. Brodie developed the recording bellows to measure small changes in volume and were intended to be a more accurate replacement for Marey’s tambour. They were intended for research with small animals and there were four sizes: 30×20 mm with a volume of 7.5 cc; 45 x 30 mm with a volume of 25 cc, 60 x 40 mm with a volume of 67 cc and 120 x 80 cc with a volume of 500 cc.

From Brodie, Thomas Gregor. “On recording variations in volume by air-transmission. A new form of volume-recorder.” The Journal of Physiology 27.6 (1902): 473-487.

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