  We consider various methods and techniques for measuring electron
magnetization and susceptibility, which are used in experimental condensed
matter physics. The list of considered methods for macroscopic measurements
includes magnetomechanic, electromagnetic, modulation-type, and also
thermodynamic methods based on the chemical potential variation. We also
consider local methods of magnetic measurements based on the spin Hall effects
and NV-centers. Several scanning probe magnetometers-microscopes are
considered, such as magnetic resonance force microscope, SQUID-microscope, and
Hall microscope. The review focuses on the spin magnetization measurements of
electrons in non-magnetic materials and artificial systems, particularly, in
low-dimensional electron systems in semiconductors and in nanosystems, which
came to the forefront in recent years.
