(57) Abstract Objective The coming wa which can enjoy the roulette gameIt designates that the coaster which has me te interest is offered as purpose. Constitution The top board 1 which designates the surface as mount section 11 of drinking container 2Through the spindle 12 of the specified length which hangs on the back centerAs it is concatenated to substrate 3, in spindle 12 top board 1Body of revolution 4 of large diameter time motion has been inserted also the ri possibly, at the same timeIt is located to the surface of top board 1 or lap the destal rim part of top board 1On the one hand marking 44 of many type of surface body of revolution 4 the average recordingThe te time, collimating mark ma which already collimating mark does one of marking 44 on the one handku is displayed 14. .
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