an instrument for measuring the pressure of the blood.

An instrument for measuring (a) the quantity of blood passing through a vessel in a given time; (b) the pressure of the blood (= haemodynamometer n.…

An instrument for measuring (a) tension of the eyeball in glaucoma, (b) intravascular blood-pressure, (c) strains within a liquid.

an instrument for measuring the force of the pulse.

In the genitive and attributive, esp. in Gaertner's tonometer. Designating an apparatus used to measure (or estimate) blood pressure, consisting of…