These SRMs are needed to calibrate commercial magnetometers used to measure the magnetic properties of magnetic recording materials, permanent magnets, magnetic shielding materials, etc.
(These SRMs; are needed; to calibrate commercial magnetometers) (commercial magnetometers; used; to measure the magnetic properties of magnetic recording materials, permanent magnets, magnetic shielding materials, etc.)
These SRMs commercial magnetometers
are needed used
to calibrate commercial magnetometers
to measure the magnetic properties of magnetic recording materials, permanent magnets, magnetic shielding materials, etc.