singapore shares in japan looked set for a lower open on tuesday following their monday surge with the australian central bank set to announce its interest rate decision later in the day futures pointed to a lower open for japanese stocks the nikkei futures contract in chicago was at 29505 while its counterpart in osaka was at 29560 that compared against the nikkei 225s last close at 2964708 australian stocks edged higher in morning trade with the spasx 200 up around 03 the reserve bank of australia is set to announce its interest rate decision at around 1130 am hksin