This invention concerns {TAIL ~ a method} for the synchronization of a gear machining instrument that works according to {HEAD ~ the hobbing method} 
This invention concerns { TAIL ~ a method } for the synchronization of a gear machining instrument that works according to { HEAD ~ the hobbing method }
OTH OTH OTH 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