Earth, clean (noiseless) earth, protective earth, frame or chassis, equipotentiality, omnidirectional microphone, bidirectional microphone, unidirectional or cardioid microphone, hydrophone, underwater sound projector, reversible transducer for underwater sound, transformer, clock; time switch; timer, Morse key; electric shaver outlet.
WITHDRAWN
IEC 60417C:1977 ED1
99.60
Withdrawal effective
Jun 17, 1997