{TAIL ~ A ring} is rotatably mounted to the cylindrical top and has three notches defined in {HEAD ~ an inner periphery} thereof 
{ TAIL ~ A ring } is rotatably mounted to the cylindrical top and has three notches defined in { HEAD ~ an inner periphery } thereof
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH