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