A boomerang measuring 48 mm [1.8 in] long and 45 mm [1.77 in] wide, was successfully thrown by Sadir Kattan at the Australian National Boomerang Championships, Melbourne, Vic, on 22 March 1997.  The boomerang traveled past the qualifying 20 m [65.6 ft] and returned into the accuracy circles from where it had been thrown. - page 127, Guinness World Records 2002.

Sadir with the record setting boomerang