Einthoven

This coil, then, with the thermo-couple at its lower extremity, is hung between the ends of a powerful magnet much as the fibre of the Einthoven Galvanometer is situated.

The very elaborate and delicate electrocardiograph with the string galvanometer devised by Einthoven is used.

The Einthoven string galvanometer is another form of sensitive instrument for the measurement of small direct currents.

The Einthoven galvanometer consists of a very powerful electro-magnet, the pole pieces of which converge almost to points.

Back of this screen," he went on, indicating it in the corner of the room, "I have placed what is known as the string galvanometer, invented, or, perhaps better, perfected by Dr. Einthoven, of Leyden.