The tick size is 10 yen for Nikkei 225 Futures and 1 sen per 100 yen of face value for 10-year JGB Futures. Multiplying the tick size by the contract unit gives the profit or loss per unit when the price moves by one tick, which is 10 yen × 1,000 = 10,000 yen for Nikkei 225 Futures.