.~ With rotor (e.g., filar suspension, zero set, balancing) {2}
154 PB
.~.~ Pointer and bearing details
Unofficial Alpha Subclasses: R PB
DEFINITION
Classification: 324/154
(under subclass 76) Subject matter having a rotor.
(1) Note. This subclass includes, for example, rotors provided with filar suspensions, rotors having means for setting them to zero, and rotors having means to balance them.