A plug launching device 1, wherein said upper section and said lower section are generally cylindrical and {HEAD ~ said lower section} is telescopically movable with {TAIL ~ respect} to said upper section  
A plug launching device 1 , wherein said upper section and said lower section are generally cylindrical and { HEAD ~ said lower section } is telescopically movable with { TAIL ~ respect } to said upper section
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH