A centrifugal governor 2, wherein {HEAD ~ said spark generating means} comprises {TAIL ~ a magnetic inductor} for supplying magnetic field 
A centrifugal governor 2 , wherein { HEAD ~ said spark generating means } comprises { TAIL ~ a magnetic inductor } for supplying magnetic field
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH