(under subclass 200) Subject matter wherein the apparatus to sense and indicate the sensing of a magnetic field is responsive to a magnetic field modified by material which has magnetic properties, the indication of the sensing being directly or indirectly representative of the ease with which the material can be magnetized.
(1) Note. The ratio of the intensity of magnetization of the material to the magnetic intensity of the field causing the magnetization of the material is known as susceptibility.
SEE OR SEARCH THIS CLASS, SUBCLASS:
204, for apparatus to test gas, liquids, and fluent particles entrained in a fluid.
228, for apparatus to test materials which require a magnetic test field including torque magnetometers.
