VIENNA (Reuters) - Las Vegas it isn`t, but the Austrian equivalent hopes to roll into the record books by spinning the world`s biggest roulette wheel. The gambling extravaganza at Baden near Vienna measures 147 by 60 metres (160 by 65 yards) which is equal to 2,000 roulette tables or one and a half football fields, organiser Casinos Austria said on Monday. Each of the 37 rectangles where gamblers place their bets is 120 square metres (390 square feet) big - enough room for at least 50 horses or 127 sumo wrestlers.