In {TAIL ~ the side wall} of the casing is formed a rectangular opening portion which opens at {HEAD ~ the top end}; and on the primary bobbin a rectangular closing member is formed integrally therewith 
In { TAIL ~ the side wall } of the casing is formed a rectangular opening portion which opens at { HEAD ~ the top end } ; and on the primary bobbin a rectangular closing member is formed integrally therewith
OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH