The legs 124 a,124 b define respective aligned apertures 125 a,125 b, and first and second ends 126 a,126 b of {HEAD ~ a spool} 126 are rotatably supported respectively in these apertures, and {TAIL ~ the spool} extends between and through the legs 124 a,124 b 
The legs 124 a,124 b define respective aligned apertures 125 a,125 b , and first and second ends 126 a,126 b of { HEAD ~ a spool } 126 are rotatably supported respectively in these apertures , and { TAIL ~ the spool } extends between and through the legs 124 a,124 b
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH