The "Torrstick": a ruler calibrated in millimeters of mercury for measurement of hydrostatic pressure.
We have designed and constructed a ruler ("Torrstick") calibrated in millimeters of mercury for the measurement of hydrostatic pressure differences. Marks are placed on a measuring stick every 1.34 cm, to afford the best compromise between a column of 0.9% saline solution and a column of blood. Several uses for this ruler are proposed, including the measurement of central venous pressure.
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Department of Anesthesiology, Ohio State University, School of Medicine, Columbus 43210.
Schulte
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Morris
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Ramsey
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D001795:Blood Pressure Determination / Q000295:instrumentation*; D002138:Calibration; D004867:Equipment Design; D006801:Humans; D006874:Hydrostatic Pressure; D008628:Mercury; D014160:Transducers, Pressure
D008628:Mercury