(under subclass 200) Subject matter wherein the apparatus to sense and indicate the sensing of a magnetic field is combined with the subject matter of another class when not provided for elsewhere.
(1) Note. The examination of material by magnetic fields and the testing of magnetic fields are here when combined with other subject matter.
(2) Note. In combination with magnetic testing are: demagnetizing, the conveying of material to or from the test, or the conveying of the magnetic test apparatus, diverse test apparatus of other classes and subject matter of other classes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
157, for measuring or sensing electricity combined with other subject matter.
SEE OR SEARCH CLASS
194, Check-Actuated Control Mechanisms, 320+, for material testers which use magnets.
209, Classifying, Separating, and Assorting Solids,
38+, for the separation of solids from solids by magnetizing means and other separation means, subclasses 567+, 609, and 636 for article separating means involving magnetism, and subclasses 212+ for the separation of magnetic material from other material which is nonmagnetic or less magnetic.
356, Optics: Measuring and Testing,
72, for the combination of an optical test with other subject matter.
