| 摘要 |
PURPOSE: To obtain the subject axis usable as a whistle even after eating the food. CONSTITUTION: This axis usable also as a whistle 5 is obtained by engagedly threading the inside of a 1st hollow axis bearing a food attached to the outer periphery thereof with a 2nd hollow axis 4 having outer diameter nearly equal to the inner diameter of the 1st axis 1 and fitted with lead(s) 3 at one end or both ends. |
