(INJ) Ten tenths? When I was in the Met Office in the '60's some of the old farts would occasionally let slip a phrase like that but it's been eighths (oktas) for over 50 years largely because it can be coded as a single digit for transmission. (9 = sky obscured by fog or heavy snow, BTW). Thank You For Making Me Feel Young.
(Juxt) OK. Thanks for giving us jazz. And Tom & Jerry. (Duj) The only piece of Australiana I have is a home-made boomerang (Specifications in New Scientist 1974.) It's big and doesn't half go but has to be thrown left-handed. They're not symmetrical.
[Rosie] I have found that turning them upside down usually helps. Then again I'm no expert any more than I'm a left handed sort of a bloke. Keep in mind, Rosie, that the heavier boomerangs were not designed to return but to stay in the air long enough to knock the noggins of the target.